STAMP: Stereo Tool AM Processor

By popular request, we have made an AM processor image for the Raspberry Pi 3 and 4 with HifiBerry sound card.

Why a separate AM processor image?

Using STAMP has a few benefits to end users:

It's very easy to use. Just put the SD card image on a Pi 4 with HifiBerry sound card and you're ready to run.
There's nothing to install or set up, and there are no settings that don't apply to AM.
It's cheaper. We have limited the features of this image, to make it only usable for AM.

How to use it

All features

- Repairs clipped audio
- Removes distortion, restores dynamics
- Also used by police forensics labs

Improves the sound of MPEG2/MP3 style lossy compressed files

Removes unwanted constant sounds, such as a 50/60 Hz hum from bad cables

- Boosts percussion instruments
- Great to restore dynamics in compressed music

- Slowly adjusts the input level
- Can speed up on large changes
- Program-dependent dynamic timing

- Intended for classical music
- Raises the level of very low level sounds without compressing louder sounds

- Two multiband compressors
- Selectable number of bands, 2-9
- Program-dependent dynamic timing

- Corrects spectrum without compression
- Consistent sound without affecting dynamics

- Generates upper bass harmonics
- Much warmer, more consistent sound
- Makes bass audible on small speakers

- Subharmonics generator
- Adds deep bass that's missing, mainly in older recordings

- Upto 200% asymmetry
- C-QUAM stereo and NRSC curve supported
- Extremely steep bandpass filters

STAMP