Audio with PWM: Difference between revisions
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* [[PWM|Armadeus PWM driver]] | * [[PWM|Armadeus PWM driver]] | ||
* http://www.fpga4fun.com/PWM_DAC.html | * http://www.fpga4fun.com/PWM_DAC.html | ||
[[Image:FrenchFlag.png]][[Fr:Audio avec PWM| Cette page en français]] | |||
Revision as of 19:31, 22 July 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.
