FM Synthesizer with HIP (ROCm and CUDA)

• Work in progress.

This project demonstrates FM Synthesis (Frequency Modulation) using HIP (Heterogeneous Compute Interface), enabling high-performance sound generation on both AMD and NVIDIA GPUs.

Key Features

FM Synthesis:

• Implements basic FM synthesis to generate sounds by modulating one oscillator's frequency (carrier) using another oscillator (modulator).

• Audio data is generated and then written to a .wav file for playback or further processing.

• Supports 16, 24 and 32 -bit PCM Output at variable sample rates.

• Multiple waveforms supported: Sine, Square, Triangle, Sawtooth.

• Can read, parse and generate audio data from a MIDI file.

Dependencies

• Ensure that your system supports HIP (either via AMD ROCm or via NVIDIA CUDA).
• Make

Build and run

git clone --recurse-submodules [email protected]:Avicted/HIP_FM_Synthesis.git

make all
make run

Program Output

The following command generates a .wav file with a 1-second sound clip using the default parameters:

./build/Main
        Hello from HIP!
    HIP Device Count: 1
    Device 0: AMD Radeon RX 6900 XT
        Compute Capability: ------------ = 10.3
        Total Global Memory: ----------- = 17163091968
        Shared Memory per Block: ------- = 65536
        Registers per Block: ----------- = 65536
        Warp Size: --------------------- = 32
        Max Threads per Block: --------- = 1024
        Max Threads Dimension: --------- = (1024, 1024, 1024)
        Max Grid Size: ----------------- = (2147483647, 65536, 65536)
        Clock Rate: -------------------- = 2660000
        Total Constant Memory: --------- = 2147483647
        Multiprocessor Count: ---------- = 40
        L2 Cache Size: ----------------- = 4194304
        Max Threads per Multiprocessor:  = 2048
        Unified Addressing: ------------ = 0
        Memory Clock Rate: ------------- = 1000000
        Memory Bus Width: -------------- = 256
        Peak Memory Bandwidth: --------- = 64.000000

        Number of HIP devices found: 1
        Hello from HIP Kernel!
        Memory Usage: 40 megabytes
        Running FM Synthesis...

        Launching kernel with 20625 blocks and 256 threads per block
        Total number of threads: 5280000

        Number of notes in Kernel 0: 1102
        FM Synthesis completed!
        Kernel execution time: 13.907 ms
        WAV file written: output_16bit_48kHz.wav
        Memory Usage: 0 megabytes

Manually Convert .wav to .mp3

ffmpeg -i output_32bit_48kHz.wav -vn -ar 44100 -ac 2 -b:a 192k output_demo.mp3

Example Audio Output

License

This project is licensed under the MIT License