Hi everyone,
I am trying to implement a digital Lock-In Amplifier in a microcontroller or DSP. However, I dont know how fast do the controller/DSP need to be. I will try to describe how the Lock-In Amplifier works and could you help me to figure out the computational power needed?
I am trying to get amplitude of 1kHz sine wave buried in noises. The signal will be measured by a 16-bit ADC first at 128ksps sampling rage.
Then it will be multiplied by two orthogonal sine waves in DSP. After this, the results will go through a DC pass filter to get the DC value. To do this, will 70MIPS enough?
Please tell me if you need more information to tell the computational power needed.
Thank you very much.
Regards
Richie.
I am trying to implement a digital Lock-In Amplifier in a microcontroller or DSP. However, I dont know how fast do the controller/DSP need to be. I will try to describe how the Lock-In Amplifier works and could you help me to figure out the computational power needed?
I am trying to get amplitude of 1kHz sine wave buried in noises. The signal will be measured by a 16-bit ADC first at 128ksps sampling rage.
Then it will be multiplied by two orthogonal sine waves in DSP. After this, the results will go through a DC pass filter to get the DC value. To do this, will 70MIPS enough?
Please tell me if you need more information to tell the computational power needed.
Thank you very much.
Regards
Richie.
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