Showing posts with label stereo. Show all posts
Showing posts with label stereo. Show all posts

Saturday, 8 April 2017

Best Value Binaural Video ASMR Recording Device (£129)

So my journey has continued from iPhone through Sony offerings and I thought I'd settled on the ZTE Axon 7 (because Dolby Atmos and playback dynamic compression). However the size and weight of the Axon made it somewhat klunky in the pocket which was bugging my airninja-ness.

So I started looked for smaller, lighter phones that weren't the Sony Xperia X Compact (because the binaural mics on that phone are sub-optimally positioned). I happened across the Samsung Galaxy A3 2016 - a refurb at just £129, so I thought I'd take a punt after some critical listening to example video footage.



Bear in mind the A3 2016 does not have any optical stabilisation and is somewhat "stripped down" compared to more current smartphones - no fingerprint scanner, no water resistance, 16GB internal RAM - yes just 16GB internal RAM (ah but expandable by 128GB using microSD so perfect for my video needs!)

The camera is "only" 13MP but it is f1.9 which is great, but "only" records at 1080P @30fps (and does display some minor minor uglies in 50Hz lighting). The camera is however better than the camera in the ZTE Axon 7 (richer colours, snappier autofocus - though nowhere near Sony Xperia XZ snappy).

So for a phone that was released to the world in December 2015 it aint looking too shabby even now almost half way through 2017 - and it's "cheap", I mean £129, I've bought pairs of shoes that cost more than that! (Yes I'm an idiot).

I've been so pleased with the A3 2016 that I have now taken a punt on the A3 2017 model (released January 2017 IIRC) which also includes a fingerprint scanner and is IP68 dustproof/waterproof (can be in a metre of water for 30 minutes). Internal RAM can be expanded to 256GB and it's a USB-C connector.

Using relatively low cost equipment has been a goal of airninja for quite some time and it looks like I can finally put a tick in that box :)

Here's a couple of binaural stereo video recordings I made to test the Samsung Galaxy A3 2016 phone that cost me just £129 -







As always I'm happy to hear your own opinions in the comments so don't be shy!

Tuesday, 18 October 2016

☴ REVIEW: Sony Xperia XZ (Platinum, unlocked, 32GB, F8331)

Nowadays it seems a new smartphone release must be a controversial affair for anyone to pay attention and it's against this landscape of headphone jack removal and exploding batteries that Sony have released the Xperia XZ into the world.
Sony Xperia XZ (platinum)

What to say.

There's nothing very controversial about the XZ. It's elegant. Understated. Solid. Tasteful. Minimal. Designful.

Whilst other companies shave off everyday interfaces and leave an empty space with the excuse it helps the acoustics of its product's speakers (and co-incidentally drives sales for its brand of wireless headphones) and call this courageous, Sony has none of it. Instead Sony present (yet another!) iteration of its smartphone design know-how.

The days of being delighted by a smartphone - any smartphone - are long past to anyone who has owned more than a couple of handsets over the last decade. Dare I say the user experience is at a plateau and the land-grab is in full swing. Humans are irrational beings and it's our emotions that are appealed to and right now Sony is the brand that appeals to me - but let me rationalise :)

I'd barely owned my Xperia X Performance (XP) a few weeks when Sony announced the XZ. If you're not interested in videography improvements than I'd say get a deal on the XP now.

The Sony Xperia XZ back camera sensor augmentation
The XZ introduces some new sensors for the videographer, whilst keeping the superior Electronic Image Stabilisation (EIS) which produces much better results with the moving image than any current smartphone Optical Image Stabilisation (OIS) - especially in environments with high frequency vibrations (for example the dashboard of a car).

I won't bore you with the marketing speak, but basically the XZ camera is augmented with a couple of extra sensors. Once deals with white balance, one with focus. This results in incrementally better video results than the XP (which to my eye is already very good).

The XZ keeps the f2.0 wide lens but still produces very acceptable results in low light compared to any other contemporary smartphone, including those with f1.8 lenses (such as HTC 10 and new iPhone).

The binaural sound recording has been a staple with Xperia since at least the Z2 (my first Xperia purchase) and here again it appears incrementally refined, certainly a better signal-to-noise ratio than the entire Z series by around 3dB.

I still love the fact that the face of the Xperia is uncluttered with any physical button, and I regard the placement of the volume rocker as a distinct advantage in everyday use (I have never accidently changed the volume on an Xperia device, ever - the same cannot be said of the other Androids and iPhones I have owned with more traditional placement of those buttons).

The dedicated camera button on the XZ remains welcome, and is by far the most responsive including versus the XP.

The fingerprint sensor is another button placement that I find perfectly acceptable, and it's very quick to recognise my prints.

Sony Xperia XZ front facing camera records 1080P video
I'm not much of a vlogger but it's good to see that the XZ front-facing camera keeps a wide field of view and records 1080P and looks decent.

No SIM tool is needed to change the SIM or access the microSD slot. Storage expandability is another plus to the Xperia line in my book.

Finally, the XZ brings USB-C to the Xperia X line which is just a much more convenient and potentially more versatile connector than either microUSB or Lightning.

I've noticed the popular press has been kinder to the XZ after pretty much universally slating the XP - which is funny and cements my opinion that if you want a smartphone for a specific purpose you should do your own research; if not it's pretty difficult to find a truly awful smartphone in 2016. Which shows just how far the category has progressed and is an indicator of that plateau.


Did I mention the XZ carries forward the ingress protection (IP68) 'waterproofing' of the top end Xperia line. Although Sony seem to be keen to play this down, and it seems the camera app has had Touch Block removed - it remains to be seen how recording video performs underwater! But it does mean accidental dips should be nothing to worry about.



The Good
Well placed microphones for binaural recording.
Around 3dB (estimated) improvement recording SNR over recent Z5 handsets.
Elegant design.
Improved sensors including addition of laser assisted focusing.
Expandable storage via microSD.
USB-C.
f2.0 / 24mm lens.
Front facing stereo speakers.
Ingress Protection IP68 waterproof.

The Bad
It's quite big and relatively conspicuous.

The Ugly
Sony bloatware cannot be uninstalled.

Wednesday, 27 July 2016

World's First ASMR Feature Length Film

MURLYN Films International in association with Trash Arts and Deer Studios announce principal photography for the ASMR movie "P.A.I.N." being directed by britmic begins August 9th 2016 in Portsmouth, UK.

The world's first narrative ASMR feature length movie is entering production and it promises to bring fans of the aural sensation a passionate story of love mixed with the dangers of gambling in gang controlled regions of the coastal city of Portsmouth.

Not much else is known about the story other than the director describing it as "a road movie and a homage to the Wizard of Oz, created with modern techniques for modern audiences".

Part of these modern production techniques include recording the film at 60fps, also known as HFR (High Frame Rate); this is a frame rate even higher than Peter Jackson used in The Hobbit which was just 48fps. Also recording live sounds with an array of microphones to maximise chances of reproducing ASMR trigger moments with viewers (especially if they are listening to playback in headphones).

When asked about these choices (HFR and ASMR) the director tells us, "science shows humans have a great reaction to 60fps film, thrills are more thrilling. This was proven when they were designing the first Star Tours ride but unfortunately technical limitations meant they could not implement [such a high frame rate] at the time [in the 80s]. If you've not heard of ASMR then keep an eye out for this movie's release and be sure to listen to it, really listen to the textures, as well as watch and respond to the visual aesthetic."

Aren't you worried at the reception 48fps screenings of The Hobbit received? "Not at all. The main criticism of The Hobbit screened with HFR was that it seemed too real and exposed the limitations of presenting Hollywood production values in anything but the same old mould. Kubrick once said 'a truly original person with a truly original mind will not be able to function in the old form and will simply do something different' - welcome to my world."

At time of writing confirmed headline cast members include Suzy Weatherall, Patrick Olliver, Phil Lyndon, Simon Berry, Chris Mills, and Michel du Vagin.

Release date for P.A.I.N. is expected to be early 2017.

Tuesday, 10 May 2016

☴ Ear On The Nokia Lumia 830 (yes Microsoft Windows Phone)

As I do airninja prep on PAINthemovie I am reminded that my current ASMR recording setup still involves a bunch of faff with an external microphone. Wouldn't it be great if there was a video device that could record rich stereo sound along with the picture?

Turns out, there is. And you'll find it that it's not from Apple - their devices after almost 10 years are still only capable of recording mono sound with the onboard mics (as crisp as that may be).

I've been vaguely aware of Nokia's HAAC mic arrays for a while but, well, since the phones that carried them were always out of my price range for a punt and carried a 'losing' OS, I could never bring myself to take that punt.

Until now.

Two things have happened.

Firstly, the Nokia brand has tanked, hit the ground hard, so it's now possible to get the stereo HAAC devices much cheaper - worth taking a punt. I'm not talking about the newest Microsoft branded Lumia devices but ye olde Nokia branded Lumia devices - specifically the 930 and 830.

Secondly, amongst others, the embedded video below - why was I not informed? I am amazed that this sound (as dynamically compressed as it is, natch) could be captured so articulately by a phone released in February 2014.


Oddly, on paper, the mid-range Nokia Lumia 830 offers better value to the ASMRtist than the one-time top-tier 930.

Why?

Well for video the 830's smaller sensor is adequate, the 16GB internal storage on the 830 all but useless for video takes - however the 830 also offers expandable storage via micro SD card and a removable battery - whereas the 930 is fixed with 32GB non-expandable storage and a sealed-in battery that can't be removed.

I've found used carrier-locked 830 in the UK for as low as £50.

I've taken a punt on a £60 "excellent condition" used handset locked to EE - it could yet all go pear shaped (how annoying is it going to be to get video off the device for example?) but, man, it records sweet stereo audio to my ear - rivalling my expensive iOS gear for ASMR video recordings.

One MAJOR caveat for my with the 830 is that it cannot record 60fps video, and that does limit its appeal to zero for HFR ASMR projects I am involved in. But, did I mention, the 830 records sweet stereo audio to my ear - with no extra gear required. Sweet enough to make me consider 30fps ASMR projects.

I expect to get my 830 by early next week. If it's easy to get the videos off I think this will be a great device for ASMR recording. Microsoft's marketing department are missing a trick, I think!

Thursday, 11 February 2016

Top 5 Things I Learned Directing for TrashArts

Tuesday evening during a live film screening event an episode of "Making Of" being produced by TrashArts was shot before, during, and after. Directed by me.

DSLR and stereo X/Y mic atop for POV experience
Fortunately the actors knew their characters really well so it was more a case of AD'ing myself and being continuity person (fuck continuity) to ensure enough coverage for the edit.

What a luxury to just turn up, direct, and go home!

The current cut of "Episode 2" is a shade under 20 minutes. We shot it all in one location in just over four hours.

Anyhow, what did I actually learn?


1. Microphone technology, and audience tastes, have shifted to the point where the camera can truly become a character (indeed this was part of the brief).
Despite shooting at a noisy event in a pub screening the football and a short film night the Røde Stereo Videomic picked up a fine stereo soundstage and intelligible dialogue (at my direction, natch - move closer!)

2. The film clips of the late Michael J Murphy went down a storm.
Part of the script called for reactions to local low budget films. I opted to show excerpts from Murphy's Avalon (German release) and his commercially unreleased super8 Bloodstream.


Boy did those clips get reactions! Secretly, I think MJM would be proud even from the afterlife.

3. Let go but keep time.
This was shot from a five page treatment (by the time I'd added my notes) and then completely performed improv. In the chaos of the venue it was pointless to have done too much planning - but doing just enough to, well, provide direction (as the director, see?)
Antagonists

4. Texan four bean soup sure does look like puke.
I wasn't sure whether to go for the brown realism or the camera friendly yellow-y GAIN style demonic possession vomit. The brown stuff worked out just swell in context.

5. Great actors can appear from nowhere.
I don't know where Sam Mason Bell finds them, but the casting really works. Like I say it probably helps that the majority have already been through the award winning "Episode 1" experience. Those that hadn't were well prepared and researched - leading to some great ad-hoc exchanges between the protagonists and antagonists.


So despite the football running into extra time (I have no idea what the final score was) and a room full of local film nerds watching what film nerds watch at these events I brought a 20 minute episode in on time and under budget (the Texan four bean soup is a tax deductible line item I assured them).

All in all, 21st Century Fat Fox movie magic.

Saturday, 2 January 2016

Wireless Binaural Recording Coming To Smartphones ... probably

Whilst I refine my own smartphone binaural recording technique (very much wired as at now - if you are able use a cable, right?!) it seems at least two wireless bluetooth binaural products are in the works.



One is OpenEars by Binauric.





The other is the Hooke Audio Verse.





Whilst prototypes are in use in both these wireless cases, I've been using my wired OKM-II for quite some years now and always pleased with the results when the iPhone actually bothers to record the video with a stereo soundtrack.



That's the biggest issue turning me off my current wired solution: unpredictable with iPhone video recording - sometimes you end up with a mono video. I could record double-system reliably but it's just not cost effective and just adds a layer of complexity.

What turns me off the wireless solutions, assuming they make it to market, is yet more battery management/recharging in the field. Boring!

This does however show that binaural recording is getting a respectable foothold in the modern market, albeit nascent from the mainstream perspective right now.

Tuesday, 29 December 2015

☴ Watchlist: HFR & ASMR

I've noticed an emerging trend amongst progressive filmmakers. Firstly they treat online as their primary global distribution platform (natch) but secondly I am seeing more and more content produced with HFR and ASMR.

HFR has largely been rejected by cinema going audiences, but I believe long-term it will become de-facto standard and 24fps will be regarded by my grandchildren as I regard the quirky looking 18fps footage of a hundred years ago incorrectly played back at 24fps.

Everyone can be a filmmaker using a single device.
It's ironic that as a young filmmaker stuck with 50Hz PAL video, I hated that horrible 'soap opera' look of 50i. I strived for that 'film look' just as some modern filmmakers strive for that 'VHS look'. Madness! I yearned for D1 720x576 but when it was finally affordable it was basically obsolete. I wish I'd discovered Laver's law in my twenties then it may have all made a lot more sense to me.

I remember reading, I forget where - other than in print in the early 90s - that when developing Star Tours the boffins got great reactions from audiences when subjected to HFR (60fps was trialled IIRC) - not interlaced like TV, but progressive, actual frames, like film. It wasn't to be though, probably due to reasons of expense and available bandwidth in existing technology. Wish I could remember what the article was and where I read it!

Reading that, it stuck with me to this day. So HFR came as no surprise to me. I believe more motion data is just as important as UHD and beyond. Kids growing up on console gaming just see a blur when they go to the cinema. In fact, so do I (and I don't even own a console).

Cinema may stick with 24fps (for that extra stop in low-light during acquisition), but it's doubtful if IMAX will. I firmly believe IMAX will supplant contemporary cinema as the 'narrative event experience' because home cinema is more comfortable (and a whole lot cheaper) than going out to the cinema. Audiences are split about 3D at the cinema but frankly that's a big fat red herring that gets rolled out every couple of decades. If you want 3D go see a stage play, they are awesome nowadays.

There's an argument that the dating scene will sustain modern cinema. I call bullshit on that, as Netflix & Chill has been marketed so successfully to the younger generation who have grown up with choice and abundance.

EXT. Star Tours.
No way home cinema will stick with 24fps, it will cater to the console kids who grew up gaming at 60fps and will demand their own normal when voting with their wallets (well, assuming the concept of a wallet survives ...)

HFR, especially at 60fps, solves a lot of problems for the progressive filmmaker.

ASMR hasn't made it into cinemas, mainly because 'true' ASMR required the listener to be wearing headphones. It's unlikely that traditional production technique will ever cater to ASMR. However, again, I believe my grandchildren may be more au fait with it than the general public of today. Whilst it may never be mainstream, I believe its benefits will ripple out just as Hi-Fi has done over the last 40 years or so.

There's no doubt that ASMR is pseudoscience, however I have definitely experienced emotional and 'tingly' responses to sound and ASMR is a good an explanation as any.

Essentially ASMR boils down to two things, of which in my experience only one needs to be present (but both is better).

POV often neglects audio completely.
Firstly, perhaps most importantly, ASMR is positional stereo. This usually means recorded binaurally POV. Not practical for most narratives (great for first-person-shooters that the kids play on their consoles - are you detecting a theme yet?). However, I believe a good stereo sound stage reproduction will suffice (more practical for production of traditional narrative).

Secondly, frequency response. Not necessarily flat, but it needs to be 'clean' rather than 'muddy'. This is because the ear cannot discern the direction of bass frequencies but higher frequencies can be highly positional. Higher frequencies tend to lend more air, and thus feed into those ASMR tingles.

It's totally possible for ASMR to be mono, but it is far more effective in stereo. Stereo allows the ear to pick out positional details due to time differences in the sound wave hitting each ear.

This is why it annoys me that Apple's iPhone cannot record stereo with its three (count 'em!) onboard mics. In every other way, the onboard audio always amazes me except for this glaring omission. Sure, external mics are available (and very decent M/S mics they are too - see video embedded below) but sometimes the onboard mics are all you have - typical during the frugalwave. Onboard stereo mics on an iPhone would no doubt be thought about and positioned correctly in relation to the camera lens (or the corrective/adaptive DSP would be spot on).



So Apple has 800 engineers working on the iPhone's camera that they buy from Sony - so what about the audio-visual?


UPDATE: Yes, I should have mentioned the digital bits that represent latitude and all that good 4:4:4 stuff but I think something akin to Moore's "law" in CCD / CMOS / NEXT TLA will see better and better low-light performance over time - it's going to happen anyway.

Wednesday, 23 December 2015

Sound Really Is 50% Of Your Movie

In the beginning was the Word, and the Word was God – it’s the big bang that started it all, not the big picture!

The sound wave, not the light wave.

Sooner or later you’ll hear someone say how important sound is – but rather than wave them on and uttering “we’ll fix it in post”, have you stopped to consider what it is that sound actually brings to your movie?

Here’s a quick test. Watch your favourite movie with the sound turned off.

Does it still engage you fully? Honestly? Would you sit so long through the end- credits (or opening title crawl) if it weren’t for the choice of music?

Does that really constitute 50% of the movie? Well, on a purely “count the senses” – vision and hearing – yes, yes it does. Arguably sound can improve the visual, and even make people see things that aren’t there.

Good sound can really help prop up a substandard visual but bad sound is, well, just bad sound. Our eyes provide vision as a dominant sense, our ears provide sound almost as a secondary sense – a sense waiting to alert us to events rather than continuously inform us in the foreground. Vision gives us actual information – “that bloke is closing a door” – sound gives us implication – “I heard the door shut, it must be shut”.

Seeing is believing; hearing is implication. Implication can exercise far more of the imagination than actual seeing (afraid of the dark? things that go bump in the night?) – yet so much sound today is used with direct correlation to the visual, giving little room for imagination amongst the (im)perfectly rendered CGI.

Imagination is possibly the most visual weapon in your arsenal as a moviemaker – and that can be driven by sound moreso than picture.

It’s not all about imagination though. Most directors agree that a performance recorded on-set will be better than any looping session (looping, or ADR, is the re-recording of dialogue in controlled studio booth conditions), although often certain environmental conditions will mean that the production sound recorded on-set or on-location is not useable.

Sound is also positional in a way that vision is not – the cinema screen is immersive, yet sound allows you to hear things off-screen (given at minimum a stereo soundstage to work with). Even with the latest 3D visual technology, you still need glasses and everything is still contained within that rectangle. Sound is reproduction of actual physical waves in the air, broken free and authentic in ways that photons are not (and, of course, vice versa – arguably – headphones are entirely optional!).

We could get into stereo miking techniques here, but I suspect that’s best saved for another post. Suffice to say I’ve been a convert to stereo recording for several years, yes, even for production audio. It gives so much more depth and spatial precision versus the cost of full sound design – cost usually being a major factor in the indie moviemaker’s world (whether that cost be in time spent or money spent).

“Real” sounds obviously work best at “real” locations and not those recorded in the fakery of the staple studio system. In the late sixties, “Easy Rider” and “Midnight Cowboy” promised to liberate the moviemaker from the shackles of over-engineering. Then Star Wars happened and moviemaking was never quite the same again.

What do you think? Is sound under utilised in modern movies? Can indies get one up on contemporary Hollywood by tapping into imagination drawn from intelligent sound rather than absolute CGI that uses sound as a crutch only?

Since originally writing this article in 2012 for OTTfilm (now defunct), it's interesting to see the rise of popular ASMR related content on YouTube vs the cinemas push for 3D glasses and a general overall industry push to 4K imaging, IMAX, and resolutions beyond.