From mboxrd@z Thu Jan 1 00:00:00 1970 From: Takashi Iwai Subject: Re: Re: Speaker-test improvements Date: Fri, 15 Apr 2005 15:01:01 +0200 Message-ID: References: <20050414204147.78276.qmail@web60808.mail.yahoo.com> Mime-Version: 1.0 (generated by SEMI 1.14.5 - "Awara-Onsen") Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Return-path: In-Reply-To: <20050414204147.78276.qmail@web60808.mail.yahoo.com> Sender: alsa-devel-admin@lists.sourceforge.net Errors-To: alsa-devel-admin@lists.sourceforge.net List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , List-Archive: To: tsw@johana.com Cc: alsa-devel@lists.sourceforge.net List-Id: alsa-devel@alsa-project.org At Thu, 14 Apr 2005 13:41:47 -0700 (PDT), Tom Watson wrote: >=20 > M=E5ns Rullg=E5rd Writes: >=20 >=20 > > Takashi Iwai writes: > > > >> At Wed, 13 Apr 2005 21:02:31 +0100, > >> James Courtier-Dutton wrote: > >>>=20 > >>> Hi, > >>>=20 > >>> I have got some voice samples saying things like "Front Right" etc.= that > >>> I want the speaker-test program to output instead of the loud sine = wave > >>> it currently does. The sine wave will stay there as an option as I = find > >>> it useful for some things. > >>>=20 > >>> The samples are 10 .wav files in 48khz mono S16_LE format. > >>> Where abouts should I put them in the CVS, and where abouts should = they > >>> get installed to, so that speaker-test can find them? > >> > >> That's great. (Is the voice female or male? We might need both to = be > >> PC ;) > > > >Not to mention all the languages of the world. > > > >--=20 > >M=E5ns Rullg=E5rd > >mru@inprovide.com >=20 >=20 > I made up a sound file similar to this and it was quite helpful. One o= f the > files had individual voices (one at a time) to identify the speakers, a= nd being > with the proper 4-channel specifications for broadcast they were identi= fied as > "left front", "right front", "left BACK" and "right BACK". In doing so= it > eliminated the abbreviation of "R" being both "rear" and "right" (not v= ery > clear). >=20 > Another test was having all of the channels identified "simultaneously"= , > usually in a loop. This allowed me to play with mixer controls which a= lways > get mixed up and get the correct things in the correct places. When yo= u hook > up sound cards and amplifiers and other external gear, it helps to have= the > channel identified. Some mixer controls on some cards fold the "back" = channels > into the "front" channels, and then you need to poke around in your mix= er > program ('alsamixer' is but one) to turn on/off "mutes" to get it right= .=20 This sounds like a good idea. > Having the speaker test "loop" with spoken words was VERY helpful to me= . >=20 > The only "problem" I see is having the samples at one speed. Sometimes= it is > helpful to have the program send the sounds out at a specific speed to = the ALSA > api, where it does further operations (another re-sampling). It should be fine when you specify the PCM with "plug" layer, e.g. % speaker-test -Dplug:surround51 -c6 > Another useful option on a sequential test would be to have the channel > identified on standard output at the beginning of the spoken words. >=20 > I really don't see a problem with the "voice" being male and English. = I > suspect that since it is ONLY A TEST, we don't need to be PC at all. Don't take my comment with a smiley so serious :) > Perhaps the sound files for the sounds (mono for each, merged in the pr= ogram) > can be put in such a place that they can be altered to suit the user. = It may > be that "LFE" may not be the desired name for the particular output. T= here may > be 8 or more channels to identify, and maybe having them labeled "one".= .. would > be "better". Given that more than one sound card might be used, and al= l slaved > thru plugins, it could go higher. Who knows. Yes, that would be helpful, too. Takahsi ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595&alloc_id=14396&op=click