This version (01 Apr 2024 13:55) was approved by John Joseph.The Previously approved version (30 Jul 2022 18:35) is available.
Table of Contents
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Chime Frequency
Description
The chime Frequency algorithm has fully programmable frequency envelopes. The envelopes are accessible by clicking the cell’s icon The length of the chime is controlled by the Maximum Time control, which is set in milliseconds. In Chime frequency envelope window points on the curve can be moved by click-dragging. New points can be added by double-clicking. Points can be removed by right-clicking and selecting “remove point.” In this case, the point closest to the mouse cursor will be removed. Chime Frequency window must have at least 3 points. Point values can be fine-tuned using the text input boxes on the right side of the envelope control window. When the control input goes to 1, the chime begins. When the control input goes to 0, the chime output stops, regardless of whether the envelope has completed or not.
Variants
- Chime FrequencyLin
- Chime FrequencyLog
Targets Supported
| Name | ADSP-214xx | ADSP-215xx/ADSP-SC5xx | ADAU145x/146x |
|---|---|---|---|
| Chime FrequencyLinear | Block and Sample | Block and Sample | Sample |
| Chime FrequencyLog | Sample | Sample | Sample |
Pins
Input
| Name | Type | Description |
|---|---|---|
| Enable/Disable chime | Control | Control Input |
Output
| Name | Type | Description |
|---|---|---|
| Output0 | Audio | chime output |
| Output1 | Control | chime end flag (only for SHARC) |
Configurable Parameters
| GUI Parameter Name | Default Value | Range | Function Description |
|---|---|---|---|
| Maximum Time | 1104 ms | 10 to 4400 ms | Time interval in ms |
| FrequencyValue_Point<n> | 80 | 20 to 20000 Hz | Fine tuning of frequency values of points in frequency graph(<n> point count) |
| FreqTime(ms)_Point<n> | 0 | 0 to Maximum Time | Fine tuning of time in ms of points in frequency graph(<n> point count) |
DSP Parameters
| Parameter Name | Description | ADSP-214xx/SC5xx/215xx | ADAU145x/146x |
|---|---|---|---|
| Sin_c | sine coefficient(only for ChimeFrequencyLin) | Integer32 | Integer32 |
| Cos_c | cos coefficient(only for ChimeFrequencyLin) | Integer32 | Integer32 |
| FrequencyPoints | Time intervals of frequency points | Integer32 | Integer32 |
| FrequencySlope | scales the slope of frequency points(only for ChimeFrequencyLin) | FixPoint2d62 | FixPoint2d62 |
| PhaseInc | Phase increment(only for ChimeFrequencyLog) | Float | FixPoint8d24 |
| 2Pi | Mathematical constant pi*2(only for ChimeFrequencyLog) | Float | FixPoint8d24 |
| FrequencyRatio | Frequency and time ratio(only for ChimeFrequencyLog) | Float | FixPoint8d24 |
| SinCosTable | combined cos and sin coefficients(only for ChimeFrequencyLog) | Float | FixPoint8d24 |
DSP Parameter Computation
sin_c=sin(initialFrequency[0] * pi))
cos_c=cos(initialFrequency[0] * pi))
PhaseInc=initialFrequency[0] * 2.0 / fs
resources/tools-software/sigmastudiov2/modules/sources/chime_frequency.txt · Last modified: 01 Apr 2024 13:55 by John Joseph