Questions tagged [bitdepth]

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How to calculate bitrate of PAL?

I have to calculate the bitrate of PAL format $\ (576*720) $. I have the following data: $\ 25 $ frames per second Interlaced Interior representation is: $\ 4:2:0 $ $\ 8 $ bpp I have tried the ...
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1answer
38 views

What exactly mean X bit depth?

I am not sure if I understand meaning of “bit depth” in audio. As I see in many audio applications the audio sample values (when not distorted) are between ...
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1answer
41 views

THD requirement for generated sine

I need to generate a sine signal using a DAC with a certain THD specification, say 0.1% @ 1KHz. As a first approach I’m considering it to be an ideal DAC along with an ideal LPF for aliasing removal ...
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2answers
48 views

Audio Bit Depth “mapping” from DAW to Audio card: is this correct?

Let say I'm generating a 1 kHz sine wave within my DAW, using some synth (Sytrus in my case). I normalize it, so it play at max "digital" amplitude 0db. Thus, any sample of the signal would gets a ...
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2answers
441 views

Amplitude ranges for different bit-depths

In Python, I am using the library Soundfile (which uses the library libsndfile) for digital sound processing. I am working with different sound files coming from different internet databases, and ...
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1answer
36 views

How many bytes would I require to store few seconds of fan controller PWM signal?

How many bytes would I require to store few seconds of fan controller PWM signal? Such PWM is typically around 25Hz, so I think I need to sample it at 50Hz, right? But what about the bit depth? ...
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1answer
151 views

unsigned audio formats, does DC offset matter?

I'm a little confused about DC offset in audio files. If I have a signal that's not using the entire dynamic range, does the DC offset matter at all, or does it need to be centered around some zero ...
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1answer
808 views

How to properly match bit growth of a FIR filter with a reference value

I am trying to implement a chain of CIC/FIR filters on an ZYNQ FPGA. Using the Xilinx FIR compiler works fine so far but I am unable to properly get all the math. At the moment I have 2 chains of ...
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1answer
1k views

Convert 16-bit wav file to 12-bit raw audio file

I want to convert a 16-bit wav file to 12 bit raw audio samples (to simulate the output of an ADC). I'm trying to run ...
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2answers
187 views

How to Reverse Color Quantization?

Are there any algorithms that attempt to perform the inverse of color quantization on an image? In other words, is there a smart way to increase the bit depth of image? The obvious answer would be to ...
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0answers
91 views

Bit Scaling Audio Streams

I posted this in stackoverflow but a poster suggested I ask the question here too... Basically, I'm getting a USB audio stream in the form of a unsigned 8-bit integer pointer. I want to convert ...
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3answers
131 views

Is a real Grayscale image always 8 bit per pixel indexed?

I tested several Grayscale images downloaded from the Internet. Some of them are 8bpp indexed while others are 24bpp (true colored). Looks like different Grayscale images have different depths. For ...
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2answers
655 views

Inter-filter bit width

I'm designing a $2$-stage filter and was simulating the effect of quantization to a certain number of bits at the filter output. The result I got was far from expected - and would appreciate any ...
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1answer
1k views

16 bit PCM Audio Sounds Like Bit Crushing

I'm developing an Android app which uses USB soundcard for input and output. The audio processes are in the native (C++) side. The device's bit resolution is 16. I get the audio stream from the ...
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1answer
270 views

Sound quality with really high sampling rate, but really low bit depth with dithering?

This question is probably more for fun and theory, but how will the sound quality be, if you create a sound with really high sampling rate (like 192kHz) and really low bit depth (e.g. 3bit)? Can you ...