Audio is too fast
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From: Paul on 19 Jan 2010 21:04 Jethro wrote: > I put a computer together from parts, and it has a problem I have > never encountered before. The audio (e.g. a singer's voice) is a > little fast similar to what would happen from playing a tape at too > fast a speed. Is there an adjustment somewhere for this? I sure > can't find it. Maybe the sound card is bad or not set up right? > > I am running XP PRO SP2. > > Thanks When music is recorded, somewhere (like the header of the file) is an indication of the sampling rate used. On a CD, the sampling frequency might involve numbers like 22.05KHz or 44.1KHz. Whereas, another popular rate on a sound chip would be 48KHz. It is important, for the player application and the chip doing the sound conversion, to operate at the same speed as the samples being used. For example, imagine what would happen if 44.1KHz samples were played at a 48KHz rate. Both the pitch of the singer's voice would be higher, and the duration of the song playback would be shorter than normal. (Time the duration of the song, and see if it lasts shorter than normal, by the ratio of 44.1 to 48.) It is up to the software involved, to use the proper rate for the music being played. As Kony has suggested, it could be a player problem. Or it could even be a driver problem (driver tells lies about sampling rates used). If the sound driver has a control panel, with its own "test sound", you might try that and see if the pitch is correct or not. The sound chip also has to use something as a timing reference, and if that timing reference is wrong, that could account for a pitch shift. Paul
From: GT on 20 Jan 2010 04:58 "Jethro" <wilson(a)somewhere.org> wrote in message news:ckmbl590tq8t27u1rssk8sr2pe3cmvgo4b(a)4ax.com... >I put a computer together from parts, and it has a problem I have > never encountered before. The audio (e.g. a singer's voice) is a > little fast similar to what would happen from playing a tape at too > fast a speed. Is there an adjustment somewhere for this? I sure > can't find it. Maybe the sound card is bad or not set up right? > > I am running XP PRO SP2. You already have a few good suggestions, so one last thing to try - Have you tried running away from the PC at almost the speed of sound? That should help.
From: ElJerid on 20 Jan 2010 18:00
"Paul" <nospam(a)needed.com> wrote in message news:hj5obo$dv3$1(a)news.eternal-september.org... > Jethro wrote: >> I put a computer together from parts, and it has a problem I have >> never encountered before. The audio (e.g. a singer's voice) is a >> little fast similar to what would happen from playing a tape at too >> fast a speed. Is there an adjustment somewhere for this? I sure >> can't find it. Maybe the sound card is bad or not set up right? >> >> I am running XP PRO SP2. >> >> Thanks > > When music is recorded, somewhere (like the header of the file) is > an indication of the sampling rate used. > > On a CD, the sampling frequency might involve numbers like 22.05KHz > or 44.1KHz. Whereas, another popular rate on a sound chip would be > 48KHz. > > It is important, for the player application and the chip doing the > sound conversion, to operate at the same speed as the samples being > used. For example, imagine what would happen if 44.1KHz samples > were played at a 48KHz rate. Both the pitch of the singer's voice > would be higher, and the duration of the song playback would be > shorter than normal. (Time the duration of the song, and see if > it lasts shorter than normal, by the ratio of 44.1 to 48.) > > It is up to the software involved, to use the proper rate for the > music being played. As Kony has suggested, it could be a player problem. > Or it could even be a driver problem (driver tells lies about > sampling rates used). If the sound driver has a control panel, with > its own "test sound", you might try that and see if the pitch is > correct or not. The sound chip also has to use something as a timing > reference, and if that timing reference is wrong, that could account > for a pitch shift. > > Paul From the info you give, I guess indeed that a wrong sample rate could be the most probable reason for the problem. Is this is the case, you could try some rate conversions with the excellent and free audio conversion program dB poweramp: http://www.dbpoweramp.com/dmc.htm |