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[Csnd] pconvolve IR files

Date2019-02-28 23:51
FromEd Cashin
Subject[Csnd] pconvolve IR files
Thank goodness for Iain McCurdy's wonderful set of examples!  (And thank you, Iain McCurdy!)

I was almost ready to give up on pconvolve, but his example got me almost all the way there.


I was able to downsample a third-party impulse response file, split it to two mono files, and use it in the example instead of Stairwell{L,R}.wav.  The result sounds very encouraging.

I got the file from this pretty random site:


... and that's nice, but I wonder what IR archives are favorites of list participants.  It's not easy to search for, because you get lots of gimmicky marketing for IR stuff locked into proprietary software.

--
  Ed Cashin <ecashin@noserose.net>
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Date2019-03-01 00:18
FromJustin Rosander
SubjectRe: [Csnd] pconvolve IR files
Lots of free IR files to be had.  Sorry, not sure where I got mine.

Sent from my iPhone

On Feb 28, 2019, at 6:51 PM, Ed Cashin <ecashin@noserose.net> wrote:

Thank goodness for Iain McCurdy's wonderful set of examples!  (And thank you, Iain McCurdy!)

I was almost ready to give up on pconvolve, but his example got me almost all the way there.


I was able to downsample a third-party impulse response file, split it to two mono files, and use it in the example instead of Stairwell{L,R}.wav.  The result sounds very encouraging.

I got the file from this pretty random site:


... and that's nice, but I wonder what IR archives are favorites of list participants.  It's not easy to search for, because you get lots of gimmicky marketing for IR stuff locked into proprietary software.

--
  Ed Cashin <ecashin@noserose.net>
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

Date2019-03-01 07:11
From"Jeanette C."
SubjectRe: [Csnd] pconvolve IR files
Mar 1 2019, Ed Cashin has written:
...
> ... and that's nice, but I wonder what IR archives are favorites of list
> participants.
...
http://www.openairlib.net/auralizationdb
http://www.echothief.com/convolution-reverbs
https://www.3sigmaaudio.com/reverbs/
https://freesound.org/people/recordinghopkins/packs/11031/
http://www.hopkinsmediaservices.com/ir.html
https://fokkie.home.xs4all.nl/IR.htm
You may also try this:
http://www.audibleworlds.com/viewtopic.php

I further discovered a thread about free impulse responses on KVR.
There's more out there. Lots of churches, Lexicon reverbs,...

HTH.

Best wishes,

Jeanette

-- 
  * Website: http://juliencoder.de - for summer is a state of sound
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Date2019-03-01 12:01
FromEd Cashin
SubjectRe: [Csnd] pconvolve IR files
Thanks very much, Jeanette.  That gives me a lot to go through.

I'm working in 88200 sample rate and 24 bits, so it will be interesting to see how many of the impulse response files are at those values or greater.

On Fri, Mar 1, 2019 at 2:11 AM Jeanette C. <julien@mail.upb.de> wrote:
Mar 1 2019, Ed Cashin has written:
...
> ... and that's nice, but I wonder what IR archives are favorites of list
> participants.
...
http://www.openairlib.net/auralizationdb
http://www.echothief.com/convolution-reverbs
https://www.3sigmaaudio.com/reverbs/
https://freesound.org/people/recordinghopkins/packs/11031/
http://www.hopkinsmediaservices.com/ir.html
https://fokkie.home.xs4all.nl/IR.htm
You may also try this:
http://www.audibleworlds.com/viewtopic.php

I further discovered a thread about free impulse responses on KVR.
There's more out there. Lots of churches, Lexicon reverbs,...

HTH.

Best wishes,

Jeanette

--
  * Website: http://juliencoder.de - for summer is a state of sound
  * SoundCloud: https://soundcloud.com/jeanette_c
  * Youtube: https://www.youtube.com/channel/UCMS4rfGrTwz8W7jhC1Jnv7g
  * GitHub: https://github.com/jeanette-c
  * Twitter: https://twitter.com/jeanette_c_s

You know I'm one of a kind,
There'll never be another me <3
(Britney Spears)

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--
  Ed Cashin <ecashin@noserose.net>
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Date2019-03-01 12:04
From"Jeanette C."
SubjectRe: [Csnd] pconvolve IR files
Mar 1 2019, Ed Cashin has written:
...
> I'm working in 88200 sample rate and 24 bits, so it will be interesting to
> see how many of the impulse response files are at those values or greater.
...
Few, if any. :) Most would be 44.1kHz, a few 48kHz.

Best wishes,

Jeanette

-- 
  * Website: http://juliencoder.de - for summer is a state of sound
  * SoundCloud: https://soundcloud.com/jeanette_c
  * Youtube: https://www.youtube.com/channel/UCMS4rfGrTwz8W7jhC1Jnv7g
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Date2019-03-01 14:27
FromJustin Rosander
SubjectRe: [Csnd] pconvolve IR files
found one of my sources here:

On Fri, Mar 1, 2019 at 7:04 AM Jeanette C. <julien@mail.upb.de> wrote:
Mar 1 2019, Ed Cashin has written:
...
> I'm working in 88200 sample rate and 24 bits, so it will be interesting to
> see how many of the impulse response files are at those values or greater.
...
Few, if any. :) Most would be 44.1kHz, a few 48kHz.

Best wishes,

Jeanette

--
  * Website: http://juliencoder.de - for summer is a state of sound
  * SoundCloud: https://soundcloud.com/jeanette_c
  * Youtube: https://www.youtube.com/channel/UCMS4rfGrTwz8W7jhC1Jnv7g
  * GitHub: https://github.com/jeanette-c
  * Twitter: https://twitter.com/jeanette_c_s

I'm not that innocent... <3
(Britney Spears)

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Date2019-03-01 14:33
FromEd Cashin
SubjectRe: [Csnd] pconvolve IR files
Thanks.  They have freebies and for-sale bundles.  I'm not against paying a bit for a quality collection.  I notice, though, that even at that site the sampling rate doesn't go above 48000.  It's probably OK, though, since it's 24 or 32 bit.

On Fri, Mar 1, 2019 at 9:27 AM Justin Rosander <justinrosander@gmail.com> wrote:
found one of my sources here:

On Fri, Mar 1, 2019 at 7:04 AM Jeanette C. <julien@mail.upb.de> wrote:
Mar 1 2019, Ed Cashin has written:
...
> I'm working in 88200 sample rate and 24 bits, so it will be interesting to
> see how many of the impulse response files are at those values or greater.
...
Few, if any. :) Most would be 44.1kHz, a few 48kHz.

Best wishes,

Jeanette

--
  * Website: http://juliencoder.de - for summer is a state of sound
  * SoundCloud: https://soundcloud.com/jeanette_c
  * Youtube: https://www.youtube.com/channel/UCMS4rfGrTwz8W7jhC1Jnv7g
  * GitHub: https://github.com/jeanette-c
  * Twitter: https://twitter.com/jeanette_c_s

I'm not that innocent... <3
(Britney Spears)

Csound mailing list
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--
  Ed Cashin <ecashin@noserose.net>
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

Date2019-03-01 18:54
Frompete.goodeve@COMPUTER.ORG
SubjectRe: [Csnd] pconvolve IR files
AttachmentsNone  

Date2019-03-01 18:56
From"Jeanette C."
SubjectRe: [Csnd] pconvolve IR files
Mar 1 2019, pete.goodeve@COMPUTER.ORG has written:
...
> Can't you just use sox to convert them [to 88.2kHz]?  Doubt there'd be any audible loss.
...
On Linux I'd suggest zresample (known as zita-resample before), very
good quality.

Best wishes,.

Jeanette

-- 
  * Website: http://juliencoder.de - for summer is a state of sound
  * SoundCloud: https://soundcloud.com/jeanette_c
  * Youtube: https://www.youtube.com/channel/UCMS4rfGrTwz8W7jhC1Jnv7g
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Date2019-03-01 19:05
FromMichael Gogins
SubjectRe: [Csnd] pconvolve IR files
For resampling FFmpeg works and is very well maintained as it is very widely used, including in Google Chrome. I wonder if they borrowed SRC code.

On Sat, Mar 2, 2019, 07:56 Jeanette C. <julien@mail.upb.de> wrote:
Mar 1 2019, pete.goodeve@COMPUTER.ORG has written:
...
> Can't you just use sox to convert them [to 88.2kHz]?  Doubt there'd be any audible loss.
...
On Linux I'd suggest zresample (known as zita-resample before), very
good quality.

Best wishes,.

Jeanette

--
  * Website: http://juliencoder.de - for summer is a state of sound
  * SoundCloud: https://soundcloud.com/jeanette_c
  * Youtube: https://www.youtube.com/channel/UCMS4rfGrTwz8W7jhC1Jnv7g
  * GitHub: https://github.com/jeanette-c
  * Twitter: https://twitter.com/jeanette_c_s

Can't you see I'm a fool in so many ways <3
(Britney Spears)

Csound mailing list
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Date2019-03-01 19:26
FromEd Cashin
SubjectRe: [Csnd] pconvolve IR files
Well I was planning to use csound if necessary, but I figured downsampling a more accurate IR is preferable to upsampling one with a lower rate.

The csound opcode I was looking at, src_conv, has several levels of quality for sample rate conversion.  The docs made it sound like the highest-quality option would be competitive with any of the other tools.




On Fri, Mar 1, 2019 at 2:05 PM Michael Gogins <michael.gogins@gmail.com> wrote:
For resampling FFmpeg works and is very well maintained as it is very widely used, including in Google Chrome. I wonder if they borrowed SRC code.

On Sat, Mar 2, 2019, 07:56 Jeanette C. <julien@mail.upb.de> wrote:
Mar 1 2019, pete.goodeve@COMPUTER.ORG has written:
...
> Can't you just use sox to convert them [to 88.2kHz]?  Doubt there'd be any audible loss.
...
On Linux I'd suggest zresample (known as zita-resample before), very
good quality.

Best wishes,.

Jeanette

--
  * Website: http://juliencoder.de - for summer is a state of sound
  * SoundCloud: https://soundcloud.com/jeanette_c
  * Youtube: https://www.youtube.com/channel/UCMS4rfGrTwz8W7jhC1Jnv7g
  * GitHub: https://github.com/jeanette-c
  * Twitter: https://twitter.com/jeanette_c_s

Can't you see I'm a fool in so many ways <3
(Britney Spears)

Csound mailing list
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--
  Ed Cashin <ecashin@noserose.net>
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