I need to generate a sound signal to test a microphone. I think
any wave would do i.e. pure sine / square / or anything else.
I was just thinking that instead of building a circuit to do this
I could save some time if I can create a sound with my pc
sound card. Is there any software that can do this?
Tia
The signal generator that is part of my Daqarta shareware
package can create a huge variety of signals, including
noise, and can apply various sorts of modulation. The
current version is real-mode DOS only, so it won't work
with Windows versions later than 9x. And it only works
with sound cards or boards I've written a custom driver
for, which pretty much means ISA-bus Sound Blasters.
These use the included SB16.ADC driver.
Or, with no sound card at all you can create an 8-bit
ladder DAC with a handful of resistors on your printer
port, using the LPTX driver instead of SB16. 8-bit
sound is about equivalent to what you would get from
any lab-type function generator, in terms of distortion.
The Windows version of Daqarta is in development.
The signal generator portion is in beta-test, and will be
released early as a stand-alone. I'll announce it
here when released, probably in a month or so.
Bob Masta
dqatechATdaqartaDOTcom
D A Q A R T A
Data AcQuisition And Real-Time Analysis
Shareware from Interstellar Research
www.daqarta.com