DSPi Console is the native macOS companion application for the DSPi firmware. It provides comprehensive control, configuration, and monitoring for the DSPi hardware platform.
- Parametric EQ:
- Master Inputs (USB): 10 parametric bands per channel.
- Outputs (SPDIF & Sub): 2 parametric bands per channel for output correction/crossover.
- Filter Types: Peaking, Low Shelf, High Shelf, Low Pass, and High Pass.
- Per-Channel Gain & Mute:
- Independent gain control (-60dB to +10dB) for each output channel.
- Quick-mute via clickable meter labels (L/R/S) or dedicated toggle on channel pages.
- Visual feedback: muted channels show greyed-out labels and meters.
- Time Alignment: Adjustable delay (0–170ms) for each output channel.
- Global Preamp: Digital gain control (-60dB to +10dB) with a master hardware bypass toggle.
- Import:
- DSPi Format: Native text-based format supporting multi-channel configurations.
- REW Format: Imports Room EQ Wizard text exports. Includes a channel selector to map single-channel filters to specific device channels (L/R).
- Export: Saves the full device configuration to a timestamped text file.
- AutoEQ Integration:
- Database: Local database of AutoEQ headphone profiles.
- Application: One-click mapping of correction curves to Master PEQ bands.
- Updates: Built-in tool to rebuild the database directly from the upstream GitHub repository.
- Persistence:
- Commit Parameters: Saves the current configuration to the RP2040's non-volatile flash memory.
- Revert to Saved: Reloads parameters from flash, discarding RAM changes.
- Factory Reset: Restores all parameters to default safe values (flat EQ, 0dB gain).
- Response Graph:
- Bode Plot: Real-time magnitude response rendering (20Hz–20kHz).
- Accuracy: Uses a Swift port of the firmware's biquad implementation to ensure the displayed curve matches hardware behavior.
- Interactive: Per-channel visibility toggles via the legend.
- Live Metering: Real-time peak level monitoring for USB Inputs, SPDIF Outputs, and PDM Subwoofer.
- System Status: Live CPU load monitoring for both RP2040 cores.
- Dashboard: High-level overview of all active channels and filter states.
The application communicates with the RP2040 via raw USB bulk transfers using IOUSBDeviceInterface.
Device Identification:
- Vendor ID:
0x2e8a - Product ID:
0xfedd
| Request | ID | Payload | Description |
|---|---|---|---|
REQ_SET_EQ_PARAM |
0x42 |
struct { ch, band, type, freq, q, gain } |
Uploads filter parameters. |
REQ_GET_EQ_PARAM |
0x43 |
(float32) |
Retrieves current filter values. |
REQ_SET_PREAMP |
0x44 |
(float32) |
Sets global input gain in dB. |
REQ_GET_PREAMP |
0x45 |
(float32) |
Retrieves current preamp gain. |
REQ_SET_BYPASS |
0x46 |
(uint8) |
Enables/Disables master hardware bypass. |
REQ_GET_BYPASS |
0x47 |
(uint8) |
Retrieves bypass state. |
REQ_SET_DELAY |
0x48 |
(float32) |
Sets channel delay in milliseconds. |
REQ_GET_DELAY |
0x49 |
(float32) |
Retrieves channel delay. |
REQ_GET_STATUS |
0x50 |
struct { peaks[5], cpu[2] } |
Polls meters and CPU usage. |
REQ_SET_CHANNEL_GAIN |
0x54 |
(float32) |
Sets output channel gain in dB. |
REQ_GET_CHANNEL_GAIN |
0x55 |
(float32) |
Retrieves output channel gain. |
REQ_SET_CHANNEL_MUTE |
0x56 |
(uint8) |
Mutes/unmutes output channel. |
REQ_GET_CHANNEL_MUTE |
0x57 |
(uint8) |
Retrieves output channel mute state. |
REQ_SAVE_PARAMS |
0x51 |
(none) |
Persists current configuration to flash. |
REQ_LOAD_PARAMS |
0x52 |
(none) |
Reloads configuration from flash. |
REQ_FACTORY_RESET |
0x53 |
(none) |
Resets all settings to default. |
The application manages five audio channels:
| Channel | Role | Band Count | Gain/Mute |
|---|---|---|---|
| Master L/R | USB Input | 10 per channel | No |
| Out L/R | SPDIF Output | 2 per channel | Yes |
| Sub | PDM Output (Pin 10) | 2 | Yes |
- Clone the repository.
- Open
DSPi Console.xcodeprojin Xcode 15+. - Ensure the deployment target matches your macOS version (macOS 12.0+ recommended).
- Run the DSPi Console scheme.
- The app will automatically connect when a compatible DSPi device is detected.
