Questions tagged [dsp]
DSP stands for Digital Signal Processing or Digital Signal Processor.
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DAC and ADC Clipping, Headroom before Clipping, Peak and RMS confusion
If I wanted to calculate the back off or headroom of a signal before clipping in an ADC, should this be the difference between the ADC peak full scale and the RMS of my signal or should it be the ...
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What's the maximum sample rate for lattice wave filter?
From Wanhammar, Lars DSP Integrated Circuits:
EXAMPLE 6.5
The filter shown in Figure 6.30 has been implemented using so-called
redundant, bit-parallel arithmetic in which long carry propagations are ...
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What's the essentially equivalent network in digital circuit?
The following is a snippet from DSP Integrated Circuits (Academic Press Series in Engineering) by Lars Wanhammar.
Essentially equivalent network in digital circuit.
Theorem 6.3 states:
If an ...
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Problem with I2S and IIR-filter
I am working on a system that receives audio data over Bluetooth using a BM83. This is transmitted to an STM32F7 over ADC, an IIR-filter is applied and the data is transmitted out over I2S. The ADC ...
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DSP VS FPGA for Power electronics Solar inverters
I need some help regarding the use of an FPGA or DSP for the control loop of the three-phase solar inverter. I want to implement a digital feedback system (as shown below) instead of analog and ...
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Digital Beamforming performance issues - ADC and DAC clipping
Digital Beamforming when compared with analog beamforming provides many benefits in terms of performance and flexibility. It is however more complex and each antenna will have its own frontend and own ...
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Doubts on implementation of a beamforming algorithm to produce narrower beams
I am trying to understand and implement in MATLAB, the algorithm described in the paper A Beamforming Method Based on Polarization Matching but my math background is not strong nor am I used to ...
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Rx digital beamforming
I am using Rx digital beamforming with independent ADCs . These ADCs introduce quantization noise which I am trying to calculate and model. I am not sure though if that quantization noise adds in ...
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How to Derive Digital Filter Coefficients From Given Specifications
I am looking to further understand how to derive the coefficients of a digital filter from design specifications. For example, if I wanted a FIR Butterworth low pass filter with a pass band till 0.2 (...
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Switching from time domain to frequency domain and vice versa in signal processing using FFT
I have a problem dealing with a real signal in time domain or in frequency domain when I need to do some processing on it in the dual or other domain via FFT or IFFT.
I find myself dealing with a ...
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EPWM1 and EPWM2 are not in sync TMS320F28379D
I am using LAUNCHXL-F2379D, I am creating sine wave of 50Hz using math function. positive half of that sinewave I am giving it to EPWM2 (working on 10kHz) whereas during negative half of the sine wave ...
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Amplification for digital caliper
I am making a DIY digital caliper, more on the project you can find here.
From various places I found how to design the patterned for the PCBs and with a scope I measured existing calipers to ...
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Understanding the nature and the impact of gain flatness on EVM of a transmit signal
I have a signal which has a quite a steep slope in frequency domain (or gain non-flatness), in fact 3 dB.
This signal will go through an amplifier and it is going to be operated in the saturation ...
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What exactly does the limiter do in FSK demodulators?
I wonder what exactly the limiter does in FSK demodulators.
What are the advantages?
Could it be just a saturation in ADC or fixed-pointing stages?
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PCM to decibel conversion in ESP-IDF using PDM microphone [closed]
I am using PDM microphone with ESP32-Wroom-32. By using ESP-IDF i2s_pdm_rx example. I was able to get PCM data steam in an array buffer from these int16_t values. ...
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