Possible to do?

geraldandreas · Jun 18, 2011, 09:03 PM

i try to get ultrasonic sound to hearable sound, so is it possible to create a plugin as frequence-divisor /10
thanks for answers

Russ · Jun 19, 2011, 05:18 AM

The DSP is locked at a sample rate of 48000, which makes the maximum frequency that it can reproduce, half of that (24000). Since most of the ultrasonic range is above that, it cannot even be processed by the DSP.

Aside from the above, (AFAIK) doing frequency division for any arbitrary signal in real time (working with a fixed sample rate) is not so easy...

geraldandreas · Jun 19, 2011, 07:43 PM

Thanks for the Answere!!!

stylus02 · Jun 20, 2011, 06:09 PM

an audigy 2 zs can record 24bit/ 96 khz and playback 24 bit/192 khz. if you have such wavesamples you can use a sample editor to perform samplerate conversion/ transpose. converting bat noises in realtime is sadly not possible.

stylus02 · Jun 20, 2011, 07:46 PM

btw: long time ago a friend of mine and me had an idea for copyprotection in audio files with ultrasonic signals. data reduction algorithms like mp3 & co. cut out unhearable high frequencies. a piece of music with ultrasonic signals and a player which detects them had been an effective protection. today we can copy dvd's or blueray's. analog playback & sample is also possible. so this idea had made sense only with a revolution in hardware player technologies.

Jun 18, 2011, 09:03 PM	#1
geraldandreas KX-Driver Lover Join Date: Mar 2003 Location: in the heart of EU, near vienna Posts: 241 Rep Power: 0	Possible to do? i try to get ultrasonic sound to hearable sound, so is it possible to create a plugin as frequence-divisor /10 thanks for answers __________________ Gerald 1; Core2-Q9450, x38-Mobo, 2048mb, 2x SATA-HD, SB0092+LD, XP/sp3

Jun 19, 2011, 05:18 AM	#2
Russ HardwareHeaven Extreme Member Join Date: Jan 2005 Posts: 5,563 Rep Power: 62	Re: Possible to do? The DSP is locked at a sample rate of 48000, which makes the maximum frequency that it can reproduce, half of that (24000). Since most of the ultrasonic range is above that, it cannot even be processed by the DSP. Aside from the above, (AFAIK) doing frequency division for any arbitrary signal in real time (working with a fixed sample rate) is not so easy...

Jun 19, 2011, 07:43 PM	Thread Starter #3
geraldandreas KX-Driver Lover Join Date: Mar 2003 Location: in the heart of EU, near vienna Posts: 241 Rep Power: 0	AW: Possible to do? Thanks for the Answere!!! __________________ Gerald 1; Core2-Q9450, x38-Mobo, 2048mb, 2x SATA-HD, SB0092+LD, XP/sp3

Jun 20, 2011, 06:09 PM	#4
stylus02 HardwareHeaven Addict Join Date: Jan 2008 Location: germany, sb0090 Posts: 259 Rep Power: 0	Re: Possible to do? an audigy 2 zs can record 24bit/ 96 khz and playback 24 bit/192 khz. if you have such wavesamples you can use a sample editor to perform samplerate conversion/ transpose. converting bat noises in realtime is sadly not possible. __________________ http://kxm.dyndns.org

Jun 20, 2011, 07:46 PM	#5
stylus02 HardwareHeaven Addict Join Date: Jan 2008 Location: germany, sb0090 Posts: 259 Rep Power: 0	Re: Possible to do? btw: long time ago a friend of mine and me had an idea for copyprotection in audio files with ultrasonic signals. data reduction algorithms like mp3 & co. cut out unhearable high frequencies. a piece of music with ultrasonic signals and a player which detects them had been an effective protection. today we can copy dvd's or blueray's. analog playback & sample is also possible. so this idea had made sense only with a revolution in hardware player technologies. __________________ http://kxm.dyndns.org Last edited by stylus02; Jun 20, 2011 at 07:53 PM.