PWM Class D Audio Output
by bt101 from LinuxQuestions.org on (#4SQ5H)
Hi - I've been searching the internets for information about linux driving a class-d audio amplifier output stage.
Any information I find about a computer driven class-d audio amp, has the computer generating standard analogue audio and a "complete" class-d amp with analogue inputs. However I am wondering if all of those analogue stages can be eliminated and the computer audio driver simply outputs a digital PWM signal to an FET output stage.
Unless I'm mistaken, it would be simpler to have software go straight from an mp3 to PWM and not have all of those interim analogue stages. Does such an audio driver exist?
I can't seem to find any info, so perhaps I'm using poor search terms.
Thanks
Any information I find about a computer driven class-d audio amp, has the computer generating standard analogue audio and a "complete" class-d amp with analogue inputs. However I am wondering if all of those analogue stages can be eliminated and the computer audio driver simply outputs a digital PWM signal to an FET output stage.
Unless I'm mistaken, it would be simpler to have software go straight from an mp3 to PWM and not have all of those interim analogue stages. Does such an audio driver exist?
I can't seem to find any info, so perhaps I'm using poor search terms.
Thanks