15:52:34 <RRSAgent> RRSAgent has joined #audio
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15:52:36 <trackbot> RRSAgent, make logs world
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15:52:38 <trackbot> Zakim, this will be 28346
15:52:38 <Zakim> ok, trackbot
15:52:39 <trackbot> Meeting: Audio Working Group Teleconference
15:52:39 <trackbot> Date: 16 March 2017
15:53:00 <joe> agenda+ Review Pull Request status
15:53:16 <joe> agenda+ Go over new or existing issues
15:53:26 <joe> agenda+ Discuss upcoming Web Audio Conference
15:53:36 <joe> agenda+ Discuss potential for F2F meeting
15:53:42 <joe> agenda+ Any other business
15:56:21 <padenot> padenot has joined #audio
16:00:23 <rtoyg_m> rtoyg_m has joined #audio
16:00:45 <rtoyg_m> G'day!
16:00:51 <rtoyg_m> present rtoyg_m
16:01:26 <hongchan> hongchan has joined #audio
16:02:03 <ChrisL> ChrisL has joined #audio
16:02:19 <padenot> hi all !
16:02:29 <rtoyg_m> Aloha!
16:03:56 <ChrisL> hi folks
16:05:06 <joe> zakim, next agendum
16:05:06 <Zakim> agendum 1. "Review Pull Request status" taken up [from joe]
16:05:41 <ChrisL> scribenick: ChrisL
16:06:03 <ChrisL> joe: some of these PR are mergeable
16:06:15 <joe> https://github.com/WebAudio/web-audio-api/pull/1161
16:06:45 <ChrisL> joe: ray had one comment, look good paul?
16:07:00 <ChrisL> padenot: need to read in detail first
16:07:19 <joe> https://github.com/WebAudio/web-audio-api/pull/1158
16:07:31 <ChrisL> joe: will merge after you have had a chance to read it closely
16:08:06 <ChrisL> joe: ray this is yours actually. will mark assignee
16:08:21 <joe> https://github.com/WebAudio/web-audio-api/pull/1154
16:08:50 <ChrisL> (agree to merge)
16:09:00 <joe> https://github.com/WebAudio/web-audio-api/pull/1150
16:09:02 <ghaudiobot> [web-audio-api] rtoy closed pull request #1154: Fix #1116: Make PeriodicWaveOptions optional (gh-pages...1116-fix-periodicwave-constructor) https://github.com/WebAudio/web-audio-api/pull/1154
16:09:03 <ghaudiobot> [web-audio-api] rtoy pushed 2 new commits to gh-pages: https://github.com/WebAudio/web-audio-api/compare/b77740ec5c2b...4977e6c9d6de
16:09:03 <ghaudiobot> web-audio-api/gh-pages a28c946 Raymond Toy: Fix #1116: Make PeriodicWaveOptions optional...
16:09:03 <ghaudiobot> web-audio-api/gh-pages 4977e6c rtoy: Merge pull request #1154 from rtoy/1116-fix-periodicwave-constructor...
16:09:59 <ChrisL> ray: chris asked about epsilon rather than zero, need to check
16:10:12 <joe> https://github.com/WebAudio/web-audio-api/pull/1144
16:10:35 <ChrisL> padenot: I need to get back to the constructor stuff
16:10:41 <ChrisL> ray: looks very good
16:10:47 <ChrisL> padenot: couple of typos
16:10:56 <ChrisL> ... worried about rebasing
16:11:23 <ChrisL> padenot: can finish in 10 minutes
16:11:25 <jdsmith> jdsmith has joined #audio
16:11:32 <joe> https://github.com/WebAudio/web-audio-api/pull/1143
16:11:34 <jdsmith> present+ jdsmith
16:12:15 <ChrisL> joe: padenot where is this one?
16:12:34 <ChrisL> padenot: need to look at this
16:12:41 <ChrisL> joe: lets check the raw git
16:12:42 <joe> https://rawgit.com/WebAudio/web-audio-api/329a623/index.html#playback-AudioBufferSourceNode
16:12:56 <ChrisL> ray: comments were small and minor
16:13:07 <ChrisL> joe: can finish this in 30 min
16:13:53 <ChrisL> ChrisL: simpler and we are all on the same page now
16:14:03 <ChrisL> padenot: negative playback rate?
16:14:06 <ChrisL> joe: yes
16:14:25 <ChrisL> ... most issues on negative and sign change playback rate
16:14:32 <ChrisL> ... clear
16:14:50 <ChrisL> s/... cl/padenot: clear
16:15:14 <joe> https://github.com/WebAudio/web-audio-api/pull/1141
16:15:47 <ChrisL> joe: does what ray askes, and includes feedback from padenot
16:15:54 <ChrisL> ... ray approved changes
16:15:58 <ChrisL> padenot: lgtm
16:16:01 <ghaudiobot> [web-audio-api] joeberkovitz closed pull request #1141: Clarify language around resuming closed AudioContexts. (gh-pages...1100-resume-closed-ctx) https://github.com/WebAudio/web-audio-api/pull/1141
16:16:12 <joe> https://github.com/WebAudio/web-audio-api/pull/1065
16:16:15 <ghaudiobot> [web-audio-api] joeberkovitz pushed 6 new commits to gh-pages: https://github.com/WebAudio/web-audio-api/compare/4977e6c9d6de...be4dd3d4a212
16:16:15 <ghaudiobot> web-audio-api/gh-pages 6faae40 joeberkovitz: Clarify language around resuming closed AudioContexts....
16:16:15 <ghaudiobot> web-audio-api/gh-pages 2a9d1ff joeberkovitz: Merge branch 'gh-pages' into 1100-resume-closed-ctx
16:16:16 <ghaudiobot> web-audio-api/gh-pages fbb631d joeberkovitz: Respond to @padenot review feedback.
16:16:17 <ghaudiobot> [web-audio-api] joeberkovitz deleted 1100-resume-closed-ctx at d440f06: https://github.com/WebAudio/web-audio-api/commit/d440f06
16:17:05 <ChrisL> joe: paul, you and karl were going to look at this
16:17:16 <ChrisL> padenot: will ping him, may be on vacation
16:17:26 <ChrisL> ... has some implications
16:18:03 <ChrisL> padenot: if he does not answer, will do myself
16:18:43 <joe> zakim, next agendum
16:18:43 <Zakim> agendum 2. "Go over new or existing issues" taken up [from joe]
16:19:11 <ChrisL> joe: looking at v1 blockers
16:19:12 <joe> https://github.com/WebAudio/web-audio-api/issues?utf8=%E2%9C%93&q=is%3Aopen%20is%3Aissue%20label%3A%22V1%20Blocker%22%20
16:19:37 <ChrisL> joe: some do not have open PRs, most do
16:20:13 <ChrisL> padenot: 1162 I filed, found in interop testing between chrome & firefox, defined for suspend but not close
16:20:20 <ChrisL> ... propose to do the same
16:21:15 <ChrisL> padenot: need a review for my proposal
16:21:37 <ChrisL> ChrisL: makes sense to me
16:21:49 <ChrisL> padenot: in chrome it removes the element
16:22:33 <ChrisL> ray: will take a look. Not sure what we do on suspend of a context
16:23:05 <ChrisL> padenot: is supposed to to let the media element continue, not buffer
16:23:09 <ChrisL> ray: chrome makes it stop
16:23:25 <ChrisL> s/removes/stops
16:23:55 <ChrisL> joe: if context uses a source node, they ride on top of the stream and should not have an effect
16:24:17 <ChrisL> padenot: was reported by someone who was also doing capture
16:24:56 <ChrisL> joe: 1135 is what the constructor PR addresses, right?
16:25:22 <ChrisL> padenot: no, it is th audio node constructors, was going to add the others like periodic wave,we can do audio buffer
16:25:48 <ChrisL> padenot: very small compared to audio node
16:26:03 <ChrisL> joe: 1117 has the big PR, right?
16:26:28 <ChrisL> ... gets closed when PR for 1135 lands
16:26:31 <ChrisL> padenot: yes
16:26:51 <ChrisL> joe: 1089, matt was involved
16:27:08 <ChrisL> ... waiting for bbc feedback
16:27:25 <ChrisL> jdsmith: was also looking at this, think we return a consistent ordering
16:27:36 <ChrisL> padenot: windows uses smpte ordering
16:27:51 <ChrisL> joe: jdsmith could you take this?
16:28:04 <ChrisL> ... matt was going to get feedback from other developers
16:28:24 <ChrisL> padenot: talked with some VR devs at facebook, they like this proposal
16:28:34 <ChrisL> it sounds good to me
16:28:46 <ChrisL> joe: lets go with that
16:28:54 <ChrisL> jdsmith: we are good with that
16:29:20 <ChrisL> padenot: lack of a good authoritative spec that does not cost money
16:30:37 <ChrisL> ChrisL: point to the smpte spec and also say what the ordering is, so developers do not have to buy a spec
16:30:49 <ChrisL> joe: put a table into the issue
16:31:10 <ChrisL> ray: will bring to our team once it lands
16:31:25 <hongchan> (it was hongchan)
16:31:39 <ChrisL> padenot: talked with someone who has the spec, confirmed it is correct. it is the same as windows ordering
16:31:55 <ChrisL> padenot: the windows order is public
16:32:10 <ChrisL> jdsmith:  waveX
16:32:20 <ChrisL> jdsmith: will do that
16:32:28 <ChrisL> joe: 5 more bugs
16:32:44 <ChrisL> joe: 1079 has a PR, almost there
16:33:11 <ChrisL> joe: these respec warnings!
16:33:46 <ChrisL> padenot: contiguous IDL allows integrating tobies tool that lets us see rendered html of PRs with a diff
16:34:06 <ChrisL> ... easy to set up with our repo but errs because we have errors in our spec
16:34:33 <ChrisL> ray: can ook into it after constructor stuff lands
16:34:42 <ChrisL> joe: 95 is about to be closed
16:35:05 <ChrisL> joe: issue 10! the dynamics compressor node. waiting on padenot
16:35:58 <ChrisL> joe: ok so we will wait another week. any questions that need to be answered?
16:36:38 <joe> zakim, next agendum
16:36:38 <Zakim> agendum 3. "Discuss upcoming Web Audio Conference" taken up [from joe]
16:36:45 <joe> zakim, next agendum
16:36:45 <Zakim> agendum 3 was just opened, joe
16:37:13 <ChrisL> joe: matt was going to lead us on these but is not here today. not sure what issues there are
16:37:41 <joe> zakim, next agendum
16:37:41 <Zakim> agendum 4. "Discuss potential for F2F meeting" taken up [from joe]
16:38:26 <ChrisL> joe: this is our traditional public feedback session. it is august. tpac is november.
16:38:38 <ChrisL> padenot: so 3 months between them, a bit close
16:38:49 <ChrisL> ray: prefer a june f2f
16:39:43 <ChrisL> joe: consistent but slow progress, v1 blockers gradually falling. we will be done in may or june. sounds like a good time
16:40:11 <ChrisL> jdsmith: goal of f2f is to get to CR?
16:40:16 <ChrisL> joe: yes
16:41:13 <ChrisL> action: joe and matt to fix a date for f2f
16:41:14 <trackbot> Created ACTION-133 - And matt to fix a date for f2f [on Joe Berkovitz - due 2017-03-23].
16:41:33 <joe> https://github.com/WebAudio/web-audio-api/issues?q=is%3Aopen+is%3Aissue+no%3Amilestone
16:41:41 <ChrisL> joe: do we have new issues wirth no milestone? yes we have 11
16:42:40 <ChrisL> joe: lets look at the ones flagged as needing review
16:42:47 <joe> https://github.com/WebAudio/web-audio-api/issues/1148
16:43:18 <ChrisL> jdsmith: have not looked at this one
16:43:44 <ChrisL> joe: this is an architectural issue of no formalism on streaming and playback, so should defer for v2
16:44:00 <ChrisL> jdsmith: eme status is really unknown, lots of objections
16:44:11 <ChrisL> (agreement to defer to v2)
16:44:46 <joe> https://github.com/WebAudio/web-audio-api/issues/1151
16:45:14 <ChrisL> joe: okay to defer?
16:45:30 <ChrisL> ray: yes, just a bit inconsistent. can push to v.next
16:45:50 <ChrisL> padenot: makes sense
16:45:58 <ChrisL> joe: but do in v.1?
16:46:23 <ChrisL> padenot: also different that you dont create the normal destination
16:46:31 <ChrisL> (goes to v.next)
16:46:45 <joe> https://github.com/WebAudio/web-audio-api/issues/1152
16:47:12 <ChrisL> ray: 1152 constructor has no dictionary, seems odd.
16:47:26 <ChrisL> joe: makes sense to do as the contexts are so related
16:47:34 <ChrisL> ... is there much spec work?
16:47:44 <ChrisL> ray: small, add a dict like the others
16:48:03 <ChrisL> joe: and the additional feature?
16:48:11 <ChrisL> ray: can inherit, so fairly easy
16:48:29 <ChrisL> joe: can put in v1 but it isn't a v1 blocker
16:48:34 <ChrisL> jdsmith: not a blocker
16:48:42 <ChrisL> ... nice refinement
16:49:05 <ChrisL> ChrisL: sgtm
16:49:18 <joe> https://github.com/WebAudio/web-audio-api/issues/1153
16:49:55 <ChrisL> ray: it is for reverb modelling, uses gigantic arrays
16:50:05 <ChrisL> joe: so auio worklet node
16:50:19 <ChrisL> ray: needs thousands
16:50:30 <ChrisL> ... opposed to doing it here
16:50:38 <ChrisL> ... in IIR
16:51:05 <ChrisL> joe: so we agree this is for audio worklet
16:51:37 <ChrisL> ray: we will never allow thousands of coefficients
16:51:54 <ChrisL> padenot: no one has asked for a number between 20 and thousands
16:52:03 <ChrisL> (agreement)
16:52:28 <ChrisL> 1155 is a duplicate of 95
16:52:34 <joe> https://github.com/WebAudio/web-audio-api/issues/1157
16:53:11 <ChrisL> ray: this is from an IDL linter, like introspection
16:53:15 <ChrisL> padenot: makes sense
16:53:28 <ChrisL> joe: ok I will spec this
16:53:44 <ChrisL> ray: would like to see this, aligns with chrome
16:53:52 <ChrisL> padenot: yes, looks good, trivial
16:53:56 <ChrisL> jdsmith: yes
16:54:07 <joe> https://github.com/WebAudio/web-audio-api/issues/1159
16:54:33 <ChrisL> ray: 1159, output is always stereo even on a mono source
16:54:52 <ChrisL> joe: mistake?
16:55:06 <ChrisL> ray: consistent, but doubles complexity
16:55:22 <ChrisL> joe: it would get upmixed if next node needs stereo
16:55:48 <ChrisL> ray: add a diagram with mono in and out
16:55:52 <ChrisL> jdsmith: makes sense
16:55:58 <ChrisL> padenot: yup
16:56:14 <ChrisL> ray: everyone was doing stereo at first
16:56:20 <ChrisL> joe: no breakage
16:56:46 <ChrisL> ray: only if they put a channel merger on the output
16:57:05 <ChrisL> joe: ok so change it?
16:57:12 <ChrisL> ... easy to fix
16:57:19 <ChrisL> ChrisL: yes we should fix it
16:57:29 <ChrisL> jdsmith: should fix it
16:57:49 <ChrisL> https://github.com/WebAudio/web-audio-api/issues/1165
16:57:58 <ChrisL> ray: should this be A rate?
16:58:09 <ChrisL> joe: makes no difference to the algo
16:58:28 <ChrisL> padenot: great if it works, concern on doing hq resampling if target changes
16:58:38 <ChrisL> joe: same issue with k-rate though
16:58:53 <ChrisL> ... they resample whole block every render quantum
16:59:20 <ChrisL> padenot: maybe there is a good fast resample that can change quickly
16:59:38 <ChrisL> ... perf implications, untested, with be a bit harder to do a-rate
17:00:21 <ChrisL> joe: if playback and detune are constant that is when resampling comes inot the picture
17:00:35 <ChrisL> padenot: memory vs cpu tradeoff
17:00:50 <ChrisL> joe: leave on agenda
17:00:56 <ChrisL> (adjourned)
17:01:05 <ChrisL> rrsagent, make minutes
17:01:05 <RRSAgent> I have made the request to generate http://www.w3.org/2017/03/16-audio-minutes.html ChrisL
17:01:33 <ChrisL> rrsagent, make logs public
17:01:38 <ChrisL> chair: Joe
17:01:45 <ChrisL> regrets: matt
17:01:51 <ChrisL> rrsagent, make minutes
17:01:51 <RRSAgent> I have made the request to generate http://www.w3.org/2017/03/16-audio-minutes.html ChrisL
17:02:04 <ChrisL> present+ ChrisL
17:02:14 <ChrisL> present+ Rtoy
17:02:21 <ChrisL> present+ Joe
17:02:27 <ChrisL> present+ padenot
17:02:41 <ChrisL> rrsagent, make minutes
17:02:41 <RRSAgent> I have made the request to generate http://www.w3.org/2017/03/16-audio-minutes.html ChrisL
17:03:54 <ChrisL> Present: Joe, Paul, Ray, Jerry, Chris
17:03:57 <ChrisL> rrsagent, make minutes
17:03:57 <RRSAgent> I have made the request to generate http://www.w3.org/2017/03/16-audio-minutes.html ChrisL
17:05:11 <padenot> padenot has joined #audio
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20:57:38 <ghaudiobot> [web-audio-api] rtoy opened pull request #1168: Fix #1152: Define OfflineAudioContext constructor with dictionary (gh-pages...1152-add-offline-context-dictionary) https://github.com/WebAudio/web-audio-api/pull/1168
21:00:53 <ghaudiobot> [web-audio-api] rtoy opened pull request #1169: Fix #1167: WebIDL for AudioContext in a funny place (gh-pages...1167-remove-stray-audiocontext-constructor) https://github.com/WebAudio/web-audio-api/pull/1169
21:02:21 <ghaudiobot> [web-audio-api] rtoy closed pull request #1169: Fix #1167: WebIDL for AudioContext in a funny place (gh-pages...1167-remove-stray-audiocontext-constructor) https://github.com/WebAudio/web-audio-api/pull/1169
21:05:08 <ghaudiobot> [web-audio-api] svgeesus created 1093-render-quantum from gh-pages (+0 new commits): https://github.com/WebAudio/web-audio-api/commits/1093-render-quantum
21:17:00 <ghaudiobot> [web-audio-api] svgeesus pushed 1 new commit to 1093-render-quantum: https://github.com/WebAudio/web-audio-api/commit/ec0bee1dd74bc8435c6ff217f13389f1b9031ca7
21:17:00 <ghaudiobot> web-audio-api/1093-render-quantum ec0bee1 Chris Lilley: Simplify occurrences of 128 sample frames to one render quantum
21:17:59 <ghaudiobot> [web-audio-api] svgeesus opened pull request #1170: Simplify occurrences of 128 sample frames to one render quantum (gh-pages...1093-render-quantum) https://github.com/WebAudio/web-audio-api/pull/1170
21:56:48 <hongchan> hongchan has joined #audio
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22:06:59 <ghaudiobot> [web-audio-api] svgeesus pushed 1 new commit to 1093-render-quantum: https://github.com/WebAudio/web-audio-api/commit/d7f39ec835fe9406ebf5c9bc51bb3b4feb683e55
22:06:59 <ghaudiobot> web-audio-api/1093-render-quantum d7f39ec Chris Lilley: Simplify occurrences of 128 sample frames to one render quantum