Looking for an audio spectrum chip

是最帅的啊

Looking for an audio spectrum chip [Copy link]

I want to DIY a Bluetooth speaker with LED spectrum display. Due to cost and time constraints, I don't want to use a single-chip microcomputer, so I'm looking for an audio spectrum chip that can directly drive the LED. If there is a suitable recommendation, I will post the whole process of DIY speakers and give special thanks on the post.

huo_hu

Is there such a chip?

How many light spectrums do you want to make? If there are few, you can use analog circuits. If there are many lights or high depth requirements, it is more convenient to use a single-chip microcomputer, which is ready-made.

chunyang

This depends on the number of segments you need to display and the number of LEDs in each segment. There were dedicated driver chips in the 1980s, but they are probably no longer available. Currently, the display spectrum is digitalized and done by DSP. It is not done specifically, but is done as a by-product during decompression. Microcontrollers are used for human-machine interfaces and cannot do this.

是最帅的啊

huo_hu posted on 2020-9-22 10:56 Is there such a chip? How many light spectrums do you want to make? If there are few, you can use analog circuits. If there are many lights or the depth requirements are high, it is more convenient to use a single-chip microcomputer, which is ready-made...

There are finished products of this chip on Taobao, but I want to DIY one myself, and I want more than 100 lights. I don't want to use a single-chip computer now.

huo_hu

It is the most handsome. Posted on 2020-9-22 18:46 There are such chips, finished products on Taobao, but I want to DIY one myself, and the number of lights I want is more than 100. I don't want to use a single-chip microcomputer now...

The dot matrix of 100 lights is still grayscale for each light. The second floor is right. If it is already digitized, there is no need to sample it again. How did you do this on the blue tooth? I have an STM32103 ADC to sample the brightness of each point of 100 lights WS2812

se7ens

Don't struggle, the dedicated chip solution is out of reach for most players, a single-chip microcomputer is better, it is flexible, convenient and low cost