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- https://www.analog.com/media/cn/training-seminars/tutorials/MT-017.pdf
- https://www.stereophile.com/content/pdm-pwm-delta-sigma-1-bit-dacs
- https://www.stereophile.com/content/pdm-pwm-delta-sigma-1-bit-dacs-john-atkinson
- https://web.archive.org/web/20060610040059/http://ee.washington.edu/conselec/CE/kuhn/onebit/primer.htm
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- https://www.ti.com/product/TAS3308
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- https://dsp.stackexchange.com/questions/11471/how-would-sigma-delta-modulation-work-in-software