3 ms·

Note that 144dB range is what you get from 24 bits per sample. 32 bits gets you another 48dB more. Some of your ADC/DAC chain can reasonably claim 125dB range.

by dsr_ 4y ago

Note that 144dB range is what you get from 24 bits per sample. 32 bits gets you another 48dB more. Some of your ADC/DAC chain can reasonably claim 125dB range. Some amplifiers can claim 17 or even 18 bits above their noise floor - 108dB. No full-spectrum microphones, headphones or speakers can reasonably claim 125dB without distortion, but if they did you would still want to limit your exposure to "never". Long-term damage begins with long-term exposure under 96dB.

klodolph 4y ago
People will use microphones to record audio like gunshots and explosions for use as sound effects. The humble snare drum will produce loads of dBs too, and is usually close-miked. You then take the same microphone and use it to record something much quieter. You end up with microphones that definitely do reasonably claim >125 dB range. The TLM102 claims something like 130 dB. How much you care about distortion will depend on the situation. My thought is that it would be very hard to get that 130 dB range all the way from an audio source to your ADC, and it would be very hard to get it back out all the way to speakers again.
- retcore 4y ago
  >The TLM102 claims something like 130 dB. How much you care about distortion will depend on the situation. Neumann makes no such claims. They do claim max spl of 144 dB. But the TLM and is 10 dB less and this is prior to ADC of variable ability. Distortion isn't a ceteris paribus value for signal to noise calculations.
  - klodolph 4y ago
    https://en-de.neumann.com/tlm-102 https://en-de.neumann.com/tlm-102 > Due to its enormous dynamic range of 132 dB [...] Not really interested in dissecting what this means, or how to reconcile it with the SNR numbers. Just saying that Neumann does, in fact, make this claim. Not sure what point you're making about distortion.
retcore 4y ago
This unfortunately discontinued mic could comfortably exceed your claimed limits: https://en-de.neumann.com/d-01 https://en-de.neumann.com/d-01 156 dB max spl 86 dB snr 130 dB dynamic range Neumann patented a dual ADC preamp to make this possible.
- dsr_ 4y ago
  86dB signal-to-noise.
  - retcore 4y ago
    As noted in my third para :~) Additionally from the product page: "Unprecedented fidelity and detail, 130 dB dynamic range" I've just realized that the product page I linked is extremely unusual for stating a dynamic range value. However this makes sense if you read the papers covering Neumann's dual ADC and pre design of which they were justifiably proud. System D was a mid nineties introduction.
    - batmanturkey 4y ago
      One would only have the SNR worth of content inside those 130db, was the point I think that person was trying to make. Real world physical transducers will have physical limitations of some kind, not all of which must be simultaneously surpassed to encounter said limitation.

by dsr_ 4y ago

klodolph 4y ago

People will use microphones to record audio like gunshots and explosions for use as sound effects. The humble snare drum will produce loads of dBs too, and is usually close-miked. You then take the same microphone and use it to record something much quieter. You end up with microphones that definitely do reasonably claim >125 dB range. The TLM102 claims something like 130 dB. How much you care about distortion will depend on the situation. My thought is that it would be very hard to get that 130 dB range all the way from an audio source to your ADC, and it would be very hard to get it back out all the way to speakers again.

retcore 4y ago
>The TLM102 claims something like 130 dB. How much you care about distortion will depend on the situation. Neumann makes no such claims. They do claim max spl of 144 dB. But the TLM and is 10 dB less and this is prior to ADC of variable ability. Distortion isn't a ceteris paribus value for signal to noise calculations.
- klodolph 4y ago
  https://en-de.neumann.com/tlm-102 https://en-de.neumann.com/tlm-102 > Due to its enormous dynamic range of 132 dB [...] Not really interested in dissecting what this means, or how to reconcile it with the SNR numbers. Just saying that Neumann does, in fact, make this claim. Not sure what point you're making about distortion.

retcore 4y ago

This unfortunately discontinued mic could comfortably exceed your claimed limits: https://en-de.neumann.com/d-01 https://en-de.neumann.com/d-01 156 dB max spl 86 dB snr 130 dB dynamic range Neumann patented a dual ADC preamp to make this possible.

dsr_ 4y ago
86dB signal-to-noise.
- retcore 4y ago
  As noted in my third para :~) Additionally from the product page: "Unprecedented fidelity and detail, 130 dB dynamic range" I've just realized that the product page I linked is extremely unusual for stating a dynamic range value. However this makes sense if you read the papers covering Neumann's dual ADC and pre design of which they were justifiably proud. System D was a mid nineties introduction.
  - batmanturkey 4y ago
    One would only have the SNR worth of content inside those 130db, was the point I think that person was trying to make. Real world physical transducers will have physical limitations of some kind, not all of which must be simultaneously surpassed to encounter said limitation.