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basics | Audio Up/Down Conversion
There are 5 messages in this thread.
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Audio Up/Down Conversion - BobaMosFet - 2007-06-08 08:15:00
Does anyone have a schematic (or link to one) of a circuit that will convert very low (below human audio) and very high (above human audio) to somewhere in the 20Hz to 20kHz range? Even if there are 2 schematics (one for low and one for high) it would be helpful. Thanks.
Re: Audio Up/Down Conversion - John Fields - 2007-06-08 10:47:00
On Fri, 08 Jun 2007 05:15:51 -0700, BobaMosFet <j...@gmail.com> wrote: >Does anyone have a schematic (or link to one) of a circuit that will >convert very low (below human audio) and very high (above human audio) >to somewhere in the 20Hz to 20kHz range? Even if there are 2 >schematics (one for low and one for high) it would be helpful. Thanks. --- What frequencies and ranges are you talking about? -- JF
Re: Audio Up/Down Conversion - BobaMosFet - 2007-06-08 14:08:00
On Jun 8, 10:47 am, John Fields <jfie...@austininstruments.com> wrote: > On Fri, 08 Jun 2007 05:15:51 -0700, BobaMosFet > > <jgbarbe...@gmail.com> wrote: > >Does anyone have a schematic (or link to one) of a circuit that will > >convert very low (below human audio) and very high (above human audio) > >to somewhere in the 20Hz to 20kHz range? Even if there are 2 > >schematics (one for low and one for high) it would be helpful. Thanks. > > --- > What frequencies and ranges are you talking about? > > -- > JF I'm not sure. I thought it would be interesting to hear how many sub and super sonic sounds are around us. Anything above or below normal hearing range is good.
Re: Audio Up/Down Conversion - Sjouke Burry - 2007-06-08 19:53:00
BobaMosFet wrote: > On Jun 8, 10:47 am, John Fields <jfie...@austininstruments.com> wrote: >> On Fri, 08 Jun 2007 05:15:51 -0700, BobaMosFet >> >> <jgbarbe...@gmail.com> wrote: >>> Does anyone have a schematic (or link to one) of a circuit that will >>> convert very low (below human audio) and very high (above human audio) >>> to somewhere in the 20Hz to 20kHz range? Even if there are 2 >>> schematics (one for low and one for high) it would be helpful. Thanks. >> --- >> What frequencies and ranges are you talking about? >> >> -- >> JF > > I'm not sure. I thought it would be interesting to hear how many sub > and super sonic sounds are around us. Anything above or below normal > hearing range is good. > Google for "bat detector". Those convert bat ultrasonics to the audio range.
Re: Audio Up/Down Conversion - Jamie - 2007-06-08 20:17:00
Sjouke Burry wrote: > BobaMosFet wrote: > >> On Jun 8, 10:47 am, John Fields <jfie...@austininstruments.com> wrote: >> >>> On Fri, 08 Jun 2007 05:15:51 -0700, BobaMosFet >>> >>> <jgbarbe...@gmail.com> wrote: >>> >>>> Does anyone have a schematic (or link to one) of a circuit that will >>>> convert very low (below human audio) and very high (above human audio) >>>> to somewhere in the 20Hz to 20kHz range? Even if there are 2 >>>> schematics (one for low and one for high) it would be helpful. Thanks. >>> >>> --- >>> What frequencies and ranges are you talking about? >>> >>> -- >>> JF >> >> >> I'm not sure. I thought it would be interesting to hear how many sub >> and super sonic sounds are around us. Anything above or below normal >> hearing range is good. >> > Google for "bat detector". Those convert bat > ultrasonics to the audio range. THe Stand by diode ring modulator! :))) or LM1496 chip will also do it ... -- "I'm never wrong, once i thought i was, but was mistaken" Real Programmers Do things like this. http://webpages.charter.net/jamie_5