pvsfwrite and 0dbfs

Date	2016-03-02 17:29
From	Iain McCurdy
Subject	pvsfwrite and 0dbfs
	The appended csd analyses fox.wav and writes a file fox.pvx using pvsfwrite in instr 1. It then read and resynthesises the audio in instr 2. If 0dbfs=1 this performs as expected but if 0bdfs is removed - so it defaults to 32768 - the resynthesised playback in instr 2 is hugely distorted. Obviously an amps mismatch. pvsfread and pvsdiskin give the same results. I am just trying to decide where the problem lies (pvsfwrite I think) and if it is something that should be fixed. <CsoundSynthesizer> <CsOptions> -odac -dm0 </CsOptions> <CsInstruments> sr = 44100 ksmps = 64 nchnls = 1 0dbfs = 1 #define SoundName #fox# instr 1 p3 filelen "$SoundName..wav" asig diskin "$SoundName..wav" fsig pvsanal asig, 1024, 256, 1024, 0 pvsfwrite fsig, "$SoundName..pvx" out asig event_i "i",2,p3+0.5,p3 endin instr 2 p3 filelen "$SoundName..pvx" kptr linseg 0,p3,p3 ;fsig pvsdiskin "$SoundName..pvx",1,1 fsig pvsfread kptr, "$SoundName..pvx" asig pvsynth fsig out asig endin </CsInstruments> <CsScore> i 1 0 0.1 ; read file and write analyse ;i 2 5 0.1 ; read analysis and resynthesise f 0 20 </CsScore>

Date	2016-03-03 10:38
From	Richard Dobson
Subject	Re: pvsfwrite and 0dbfs
	Obviously as the author I should investigate this, but am away from computer all day, as also yesterday, so I am kind of hoping someone else can step in. Victor? Richard Dobson Sent from my iPhone On 2 Mar 2016, at 17:29, Iain McCurdy <i_mccurdy@HOTMAIL.COM> wrote: The appended csd analyses fox.wav and writes a file fox.pvx using pvsfwrite in instr 1. It then read and resynthesises the audio in instr 2. If 0dbfs=1 this performs as expected but if 0bdfs is removed - so it defaults to 32768 - the resynthesised playback in instr 2 is hugely distorted. Obviously an amps mismatch. pvsfread and pvsdiskin give the same results. I am just trying to decide where the problem lies (pvsfwrite I think) and if it is something that should be fixed. <CsoundSynthesizer> <CsOptions> -odac -dm0 </CsOptions> <CsInstruments> sr = 44100 ksmps = 64 nchnls = 1 0dbfs = 1 #define SoundName #fox# instr 1 p3 filelen "$SoundName..wav" asig diskin "$SoundName..wav" fsig pvsanal asig, 1024, 256, 1024, 0 pvsfwrite fsig, "$SoundName..pvx" out asig event_i "i",2,p3+0.5,p3 endin instr 2 p3 filelen "$SoundName..pvx" kptr linseg 0,p3,p3 ;fsig pvsdiskin "$SoundName..pvx",1,1 fsig pvsfread kptr, "$SoundName..pvx" asig pvsynth fsig out asig endin </CsInstruments> <CsScore> i 1 0 0.1 ; read file and write analyse ;i 2 5 0.1 ; read analysis and resynthesise f 0 20 </CsScore> 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	2016-03-03 11:00
From	Victor Lazzarini
Subject	Re: pvsfwrite and 0dbfs
	I think the ball is in my court, the problem most likely to be with pvsfwrite. Can a ticket be open in github? Victor Lazzarini Dean of Arts, Celtic Studies, and Philosophy Maynooth University Ireland On 3 Mar 2016, at 10:38, Richard Dobson <richarddobson@BLUEYONDER.CO.UK> wrote: Obviously as the author I should investigate this, but am away from computer all day, as also yesterday, so I am kind of hoping someone else can step in. Victor? Richard Dobson Sent from my iPhone On 2 Mar 2016, at 17:29, Iain McCurdy <i_mccurdy@HOTMAIL.COM> wrote: The appended csd analyses fox.wav and writes a file fox.pvx using pvsfwrite in instr 1. It then read and resynthesises the audio in instr 2. If 0dbfs=1 this performs as expected but if 0bdfs is removed - so it defaults to 32768 - the resynthesised playback in instr 2 is hugely distorted. Obviously an amps mismatch. pvsfread and pvsdiskin give the same results. I am just trying to decide where the problem lies (pvsfwrite I think) and if it is something that should be fixed. <CsoundSynthesizer> <CsOptions> -odac -dm0 </CsOptions> <CsInstruments> sr = 44100 ksmps = 64 nchnls = 1 0dbfs = 1 #define SoundName #fox# instr 1 p3 filelen "$SoundName..wav" asig diskin "$SoundName..wav" fsig pvsanal asig, 1024, 256, 1024, 0 pvsfwrite fsig, "$SoundName..pvx" out asig event_i "i",2,p3+0.5,p3 endin instr 2 p3 filelen "$SoundName..pvx" kptr linseg 0,p3,p3 ;fsig pvsdiskin "$SoundName..pvx",1,1 fsig pvsfread kptr, "$SoundName..pvx" asig pvsynth fsig out asig endin </CsInstruments> <CsScore> i 1 0 0.1 ; read file and write analyse ;i 2 5 0.1 ; read analysis and resynthesise f 0 20 </CsScore> 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 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	2016-03-03 11:15
From	Iain McCurdy
Subject	Re: pvsfwrite and 0dbfs
	Done. Date: Thu, 3 Mar 2016 11:00:12 +0000 From: Victor.Lazzarini@NUIM.IE Subject: Re: [Csnd] pvsfwrite and 0dbfs To: CSOUND@LISTSERV.HEANET.IE I think the ball is in my court, the problem most likely to be with pvsfwrite. Can a ticket be open in github? Victor Lazzarini Dean of Arts, Celtic Studies, and Philosophy Maynooth University Ireland On 3 Mar 2016, at 10:38, Richard Dobson <richarddobson@BLUEYONDER.CO.UK> wrote: Obviously as the author I should investigate this, but am away from computer all day, as also yesterday, so I am kind of hoping someone else can step in. Victor? Richard Dobson Sent from my iPhone On 2 Mar 2016, at 17:29, Iain McCurdy <i_mccurdy@HOTMAIL.COM> wrote: The appended csd analyses fox.wav and writes a file fox.pvx using pvsfwrite in instr 1. It then read and resynthesises the audio in instr 2. If 0dbfs=1 this performs as expected but if 0bdfs is removed - so it defaults to 32768 - the resynthesised playback in instr 2 is hugely distorted. Obviously an amps mismatch. pvsfread and pvsdiskin give the same results. I am just trying to decide where the problem lies (pvsfwrite I think) and if it is something that should be fixed. <CsoundSynthesizer> <CsOptions> -odac -dm0 </CsOptions> <CsInstruments> sr = 44100 ksmps = 64 nchnls = 1 0dbfs = 1 #define SoundName #fox# instr 1 p3 filelen "$SoundName..wav" asig diskin "$SoundName..wav" fsig pvsanal asig, 1024, 256, 1024, 0 pvsfwrite fsig, "$SoundName..pvx" out asig event_i "i",2,p3+0.5,p3 endin instr 2 p3 filelen "$SoundName..pvx" kptr linseg 0,p3,p3 ;fsig pvsdiskin "$SoundName..pvx",1,1 fsig pvsfread kptr, "$SoundName..pvx" asig pvsynth fsig out asig endin </CsInstruments> <CsScore> i 1 0 0.1 ; read file and write analyse ;i 2 5 0.1 ; read analysis and resynthesise f 0 20 </CsScore> 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 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 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