Discussion Overview
The discussion revolves around programming a PIC (PIC12F675P) controller to generate random high and low frequency sounds, specifically aiming for noises reminiscent of those produced by a dial-up modem. The conversation includes technical approaches, potential algorithms, and hardware considerations.
Discussion Character
- Exploratory
- Technical explanation
- Debate/contested
Main Points Raised
- One participant suggests using a bit-banging method on a PIC IO pin at audio rates to generate random sounds, emphasizing the need for random number generation to determine frequency and duration.
- Another participant mentions the use of an LFSR algorithm for generating pseudo-random numbers and provides a link to a resource on random number generators.
- A different approach is proposed involving the use of a DTMF chip, which could simplify the sound generation process.
- Concerns are raised about the accuracy of the generated sounds compared to actual modem sounds, with one participant questioning how closely the output needs to resemble specific baud rates.
- There is a suggestion to implement a simple modem in the PIC with external filters to achieve the desired sound quality.
Areas of Agreement / Disagreement
Participants express a variety of approaches and opinions on how to achieve the sound generation, indicating that there is no consensus on the best method or the level of accuracy required for the sounds produced.
Contextual Notes
Limitations include the lack of clarity on the specific sound characteristics desired, such as frequency range and modulation techniques, as well as the accuracy needed in replicating modem sounds.
Who May Find This Useful
Individuals interested in sound synthesis, embedded systems programming, or those working with PIC controllers and audio applications may find this discussion relevant.