Raw PCM

shkshabbir · 05-30-2006, 06:33 PM

Dear friends
I recorded some audio in Cool edit pro and tryied to save it in "PCM Raw Data (*.mp3, *.pcm, *.raw)" now when I try to open the files in cooledit or any other program it doesnt the actual sound I recorded, it give all kinds of noice and no real audio.
What shoul i do to open as i recorded.
Shabbir

olobay · 06-06-2006, 12:19 PM

I think pcm raw data is .wav.

snouffelaire · 08-28-2006, 09:37 AM

Hello,

Firstly i may answer to the question:
Raw PCM means there is no header in the file indicating the sample rate, compression, etc.
So when you open the file you must be asked for these settings, or the data will not be interpreted correctly and you will hear nothing but noise
(am i right?)

So now here is my question: my phone (cordless home phone DECT SIEMENS SL440 / SL44 for the record) can record sounds that i can set as ringtones. I can also download and upload these sounds on my PC.
BUT these sound records are raw PCM files. since I don't know the sample rate, compression, etc of this data I can't edit this sounds or make my own ringtones.
I contacted Siemens for support but they can't help me. (damn it. a $150 phone + a $50 usb cable!)
Does anyone know a program that can analyze data so it retrieves the header information of raw PCM files? (find the settings that renders a real sound and not just random noise?)

Thank you!

05-30-2006, 06:33 PM	#1 (permalink)
shkshabbir Registered User Join Date: May 2006 Posts: 1 OS: Xp	Raw PCM Dear friends I recorded some audio in Cool edit pro and tryied to save it in "PCM Raw Data (.mp3, .pcm, *.raw)" now when I try to open the files in cooledit or any other program it doesnt the actual sound I recorded, it give all kinds of noice and no real audio. What shoul i do to open as i recorded. Shabbir

08-28-2006, 09:37 AM	#3 (permalink)
snouffelaire Registered User Join Date: Aug 2006 Posts: 1 OS: XP	raw pcm + question Hello, Firstly i may answer to the question: Raw PCM means there is no header in the file indicating the sample rate, compression, etc. So when you open the file you must be asked for these settings, or the data will not be interpreted correctly and you will hear nothing but noise (am i right?) So now here is my question: my phone (cordless home phone DECT SIEMENS SL440 / SL44 for the record) can record sounds that i can set as ringtones. I can also download and upload these sounds on my PC. BUT these sound records are raw PCM files. since I don't know the sample rate, compression, etc of this data I can't edit this sounds or make my own ringtones. I contacted Siemens for support but they can't help me. (damn it. a $150 phone + a $50 usb cable!) Does anyone know a program that can analyze data so it retrieves the header information of raw PCM files? (find the settings that renders a real sound and not just random noise?) Thank you!

06-06-2006, 12:19 PM	#2 (permalink)
olobay Registered User Join Date: Apr 2006 Posts: 89 OS: XP	I think pcm raw data is .wav.