[Csnd] HRTF issues (hrtf data files modified, unreasonable zipper noise)
Date | 2020-07-26 08:42 |
From | "Jeanette C." |
Subject | [Csnd] HRTF issues (hrtf data files modified, unreasonable zipper noise) |
Hey hey, running Csound 6.14 (Arch package 6.14.0-3, built 11.04.2020) I am currently running into a lot of trouble. First, either hrtfearly or hrtfreverb apparently modify the HRTF data files (hrtf-48000-left.dat and hrtf-48000-right.dat) spontaneously. I can't say in which situation this particularly happens. It seems random. Since running one CSD repeatedly (without modification) can do it. I have currently copied the original files from HRTF-data5.08.zip (can't remember the URL). Using diff I see that the files are still untouched, right now. But I perceived horrible zipper noise, without the hrtfearly opcode complaining about the trajectory. The relevant movement is designed like this: ; listener in the centre of the room (47 x 53 x 101 metres) klX init 23.5 klY init 26.5 klZ init 50.5 ; Create a spiral kX oscil 10, .1, -1, 0 ; sine kY oscil 10, .1, -1, .25 ; cosine ; Move the centre of the circle kX += klX kY += klY kZ line 1, p3, 100 ; line from floor to ceiling Even with only the X movement the sound is disrupted. As a source I tried both the intended noise-based source, as well as a pure sine tone. Am I missing something? As far as I'm aware the default sine wave for the oscil opcode is bipolar, going from -1 to 1 and the kamp parameter only scales it. Any help is appreciated. Best wishes, Jeanette -- * Website: http://juliencoder.de - for summer is a state of sound * Youtube: https://www.youtube.com/channel/UCMS4rfGrTwz8W7jhC1Jnv7g * SoundCloud: https://soundcloud.com/jeanette_c * Twitter: https://twitter.com/jeanette_c_s * Audiobombs: https://www.audiobombs.com/users/jeanette_c * GitHub: https://github.com/jeanette-c I'm so curious, what do you think of me <3 (Britney Spears) Csound mailing list Csound@listserv.heanet.ie https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to https://github.com/csound/csound/issues Discussions of bugs and features can be posted here |
Date | 2020-07-26 11:03 |
From | Victor Lazzarini |
Subject | Re: [Csnd] [EXTERNAL] [Csnd] HRTF issues (hrtf data files modified, unreasonable zipper noise) |
It is possible that you are using incompatible data files. I would think it is strange that the code modifies the files. The HRTF opcodes only open files for reading. Prof. Victor Lazzarini Maynooth University Ireland > On 26 Jul 2020, at 08:42, Jeanette C. |
Date | 2020-07-26 11:07 |
From | Victor Lazzarini |
Subject | Re: [Csnd] [EXTERNAL] [Csnd] HRTF issues (hrtf data files modified, unreasonable zipper noise) |
btw if you have a minimal example demonstrating the opcodes modifying the data files, please open a ticket and we can look at it. Prof. Victor Lazzarini Maynooth University Ireland > On 26 Jul 2020, at 08:42, Jeanette C. |
Date | 2020-07-26 11:19 |
From | "Jeanette C." |
Subject | Re: [Csnd] [EXTERNAL] [Csnd] HRTF issues (hrtf data files modified, unreasonable zipper noise) |
Jul 26 2020, Victor Lazzarini has written: > btw if you have a minimal example demonstrating the opcodes modifying the data files, please open a ticket and we can look at it. That exactly is the problem. It doesn't seem reproducible, very random. It shouldn't be my disk, since I don't have issues with other files being disrupted, and the diskk has been changed. This issue has been there for a while. How can the HRTF data files be incompatible? As far as I'm aware there is only one package. Isn't there? Best wishes, Jeanette > > Prof. Victor Lazzarini > Maynooth University > Ireland > >> On 26 Jul 2020, at 08:42, Jeanette C. |
Date | 2020-07-26 11:29 |
From | "Jeanette C." |
Subject | Re: [Csnd] [EXTERNAL] [Csnd] HRTF issues (hrtf data files modified, unreasonable zipper noise) |
Jul 26 2020, Victor Lazzarini has written: > It is possible that you are using incompatible data files. Apparently I was. I just downloaded the files from github posted here in March: https://github.com/csound/csound/tree/develop/samples and it works. Strange that this issue really came to light just now. Main thing: it works, thanks for pointing it out! Best wishes, Jeanette > > I would think it is strange that the code modifies the files. The HRTF opcodes only open files for reading. > > Prof. Victor Lazzarini > Maynooth University > Ireland > >> On 26 Jul 2020, at 08:42, Jeanette C. |
Date | 2020-07-28 10:50 |
From | Josh Moore |
Subject | Re: [Csnd] [EXTERNAL] [Csnd] HRTF issues (hrtf data files modified, unreasonable zipper noise) |
I vaguely remember the HRTF opcodes being discussed as broken about that long ago but I can't remember what it was about. But they seemed a bit legacy to me I opt for ambisonics for 3d stuff. On Sun, Jul 26, 2020, 3:28 AM Jeanette C. <julien@mail.upb.de> wrote: Jul 26 2020, Victor Lazzarini has written: |
Date | 2020-07-28 13:36 |
From | Victor Lazzarini |
Subject | Re: [Csnd] [EXTERNAL] [Csnd] HRTF issues (hrtf data files modified, unreasonable zipper noise) |
They are certainly not broken and they are not legacy. It's a different use case
to ambisonics (multichannel versus binaural)
Prof. Victor Lazzarini
Maynooth University
Ireland
On 28 Jul 2020, at 10:50, Josh Moore <kh405.7h30ry@gmail.com> wrote:
|
Date | 2021-09-13 22:18 |
From | Partev Sarkissian <0000060b2ef1338e-dmarc-request@LISTSERV.HEANET.IE> |
Subject | Re: [Csnd] [EXTERNAL] [Csnd] HRTF issues (hrtf data files modified, unreasonable zipper noise) |
In hardware, zipper noise is a result of an RC filter on a volume control is at
an RC time constant controlling a digital gain block, that doesn't sufficiently filter.
Usually the control rate verses the sample rate issue.
In an all digital domain, I would think that it's a audio-rate/control-rate/sample-rate
proportional issue (a-rate/k-rate/s-rate). With HRTF, maybe source movement adjust
rate may also be involved.
Anyway, just spitballing here, as they say.
-PBS
-----Original Message-----
From: Victor Lazzarini <Victor.Lazzarini@MU.IE> To: CSOUND@LISTSERV.HEANET.IE Sent: Tue, Jul 28, 2020 5:36 am Subject: Re: [Csnd] [EXTERNAL] [Csnd] HRTF issues (hrtf data files modified, unreasonable zipper noise)
They are certainly not broken and they are not legacy. It's a different use case
to ambisonics (multichannel versus binaural)
Prof. Victor Lazzarini
Maynooth University
Ireland
On 28 Jul 2020, at 10:50, Josh Moore <kh405.7h30ry@gmail.com> wrote:
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