Difference between revisions of "Audio with PWM"
From ArmadeusWiki
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==Links== | ==Links== | ||
| − | * Armadeus PWM driver | + | * [[PWM|Armadeus PWM driver]] |
* http://www.fpga4fun.com/PWM_DAC.html | * http://www.fpga4fun.com/PWM_DAC.html | ||
Revision as of 09:37, 8 May 2007
It is possible to generate sound with the APF9328 without any sound chip, just by using the PWM output and the i.MXL possibilities:
Quality
Achieved sound quality is low (8bits @ 8, 16 or 32KHz) but very sufficient to reproduce voice or small sounds. PWM activation/deactivation is generating "clac" each time you play a sound (for the moment) but using some electronic filters or playing "blank noise" could solve the problem.
