Thomas, the audio levels standards do exist. But I agree with you that there isn’t just one.
Each of the areas has its own standard. So, you do have a known standard for consumer electronics. You do have known standards for radio/entertainment, studio and professional work [pre DAWs]. And you do have a ‘new’ standard for recent era digital equipments. That is why I mentioned Bob Katz’ book when Jens asked his question. I had to work with a Dutch mixing desk that attempted to be able to be employed in ‘both’ eras radio and recording studio environments. They didn’t manage it – they threw away a lot of head room. [Scorpius] The metering issues created extra problems because ideally you want the standards there to match the sensitivities too – but there is conflict. And it all depends whether you back the Loudness Wars. Remember too, generally you aren’t trying to make an equipment that is to serve in more than one of the environments. I say – Long Live Dynamic Range ! John Kaesehagen Australia From: neonixie-l@googlegroups.com [mailto:neonixie-l@googlegroups.com] On Behalf Of Tomasz Kowalczyk Sent: Tuesday, 16 April 2019 19:54 To: neonixie-l Subject: Re: [neonixie-l] OT: audio levels W dniu piątek, 29 marca 2019 08:46:37 UTC+1 użytkownik charles napisał: On 2019-03-28 10:09 p.m., johnk wrote: based on teh RMS output (.707 of the peak) That would be 0,707 (1/sqrt(2)) voltage output on a resistive load. RMS power of a sine wave is 0,5 times peak power. I like to know maximum constant RMS output, because it tells me a lot about the amplifier and its capability. The peak power or music power usually lacks a definition (I can easily imagine a design that would allow for short pulse of higher power, but power supply/amplifier would fry up if it was to deliver this peak power for longer time). It is well known that for most time amplifier delivers a little percentage of its maximum power, but having continous Watts RMS into specified load rating is a very solid rating with solid definition. On the topic: it really bothers me that there is no definition of one voltage standard. It would make perfect sense to create a standard of a CD output, for example - a 2Vpp signal, in which +1V would correspond to maximum digital value DAC can give (65535 for standard 16-bit) and -1V would correspond to a value of 0. It would make designing amplifiers much easier - the sensivity would be always same. Currently I'm building a vacuum tube amplifier and I'm mad at the fact that I need to make the sensivity on 200mVpp level (my phone output), but most of other sources will have much higher signal. I think I'll need to go with a noisy method of applying extra resistor in series with volume potentiometer for the higher inputs... or apply the resistor and a "+20dB" switch that will short it. At least it is a vacuum tube amplifier, so noise will be an issue anyway. -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to neonixie-l+unsubscr...@googlegroups.com. To post to this group, send email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/6418d010-db45-4c62-8f64-12bdc99a5520%40googlegroups.com <https://groups.google.com/d/msgid/neonixie-l/6418d010-db45-4c62-8f64-12bdc99a5520%40googlegroups.com?utm_medium=email&utm_source=footer> . For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/002701d4f45e%24a66d4870%24f347d950%24%40internode.on.net. For more options, visit https://groups.google.com/d/optout.
