StudentSA
Member
Good Day,
The raspberry pi generates its audio using PWM and passing the signal through a passive Bandpass filter:
I am trying to create an audio player (for indoor use) by passing the audio signal into and amplifier and into a pair of small (1.25" -> 2") 4Ohm speakers.
I am currently playing around with the PAM8406 amplifier and it delivers a decent audio.
My question is, on a budget of a few dollars ( like < $5), is there any additional "filter" circuitry I can add to the pi output and any better general purpose ampifier IC that can be recommended to improve the clarity and maximize sound generated.
Currently with the PAM8406 turned up to full there is a noticeable ssssshhhhh sound with and without audio playing.
Thanks,
StudentSA
The raspberry pi generates its audio using PWM and passing the signal through a passive Bandpass filter:
I am trying to create an audio player (for indoor use) by passing the audio signal into and amplifier and into a pair of small (1.25" -> 2") 4Ohm speakers.
I am currently playing around with the PAM8406 amplifier and it delivers a decent audio.
My question is, on a budget of a few dollars ( like < $5), is there any additional "filter" circuitry I can add to the pi output and any better general purpose ampifier IC that can be recommended to improve the clarity and maximize sound generated.
Currently with the PAM8406 turned up to full there is a noticeable ssssshhhhh sound with and without audio playing.
Thanks,
StudentSA