Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
dB indicator flashing red
#19
(12-Jan-2015, 16:28)PhilP Wrote: Of course, the ideal would be for music companies to stop using compression.

Just for interest, these are often-quoted figures for the loudness of various instruments etc.  If these are correct then the 96dB range of red-book CD clearly isn't adequate for reproducing the full range of an orchestra. Though I suspect that I would be happy with "only" 96dB range at home Wink

Normal piano practice                        60 -70dB
Fortissimo Singer, 3'                         70dB
Chamber music, small auditorium       75 - 85dB
Piano Fortissimo                                84 - 103dB
Violin                                                82 - 92dB
Cello                                                85 -111dB
Oboe                                                95 -112dB
Flute                                                92 -103dB
Piccolo                                            90 -106dB
Clarinet                                          85 - 114dB
French horn                                      90 - 106dB
Trombone                                        85 - 114dB
Tympani & bass drum                        106dB
Walkman on 5/10                        94dB
Symphonic music peak                120 - 137dB
Amplifier, rock, 4-6'                        120dB
Rock music peak                                150dB

Are you getting confused by the meaning of dynamic range? It is the difference between the loudest and the quietest sound in a musical work. The SPL of the quiet playing needs to be known as well as the loudest to know the dynamic range.
Whilst at an orchestral concert the loudest can indeed be over 100dB, at a concert that big the quietest moments of music will probably be around 60dB, so the dynamic range will rarely be more than 50dB.
I am glad I have not been to a rock concert at 150dB! The threshold of pain is around 120dB! but generally rock music has less dynamic range than classical, so even if the painful peaks were 150dB the equally painful quieter bits would probably still exceed 120dB, so 16 bit audio will still be plenty.
The difficulty will be, as ever, the choice of microphone.

I think I have a pretty quiet listening room. About 30dB background (40dB when the heating is running) 96dB on top of that is 126 to 136dB, which is not only hearing damage after a relatively short time but way outside the capability of the analogue side of any domestic sound system. So the dynamic range capability of CD is way more than is needed for even the biggest dynamics of classical music, which is just about possible to get on LP too, though it is very, very difficult to get the levels set accurately enough for LP. A bit too high and there is mistracking on loud bits, a bit too low and the quiet bits are ruined by hiss. 16 bit digital is easier, 24 bit digital requires no skill at all Smile
The maximum loudness of an orchestral concert is very loud at the conductor's position, thankfully not as loud where I sit. I have been making recordings for over 50 years, and now I have an app on my phone, sometimes measure the loudness and dynamic range at concerts. The peaks are frequently well over 100dB but the dynamic range rarely more than 50dB, even for Mahler and his ilk, less for classical period composers.
I am not familiar with the numbers you quote, but the singer one is not correct (I record classical singers mainly). At the post-course concert at a singers workshop last year one of the sopranos was registering 90dB at my listening position 1/3 way down the small auditorium.
The dynamic range of older non classical recordings I have checked (years ago) are more like 25dB iirc, not awful like some of the loudness war casualties, but still trivial for 16bit audio to encompass.
Devialet Original d'Atelier 44 Core, Job Pre/225, Goldmund PH2, Goldmund Reference/T3f /Ortofon A90, Goldmund Mimesis 36+ & Chord Blu, iMac/Air, Lynx Theta, Tune Audio Anima, Goldmund Epilog 1&2, REL Studio. Dialog, Silver Phantoms, Branch stands, copper cables (mainly).
Oxfordshire

Reply


Messages In This Thread
dB indicator flashing red - by PhilP - 10-Jan-2015, 00:05
RE: dB indicator flashing red - by Confused - 10-Jan-2015, 01:08
RE: dB indicator flashing red - by PhilP - 10-Jan-2015, 08:28
RE: dB indicator flashing red - by Jean-Marie - 10-Jan-2015, 10:37
RE: dB indicator flashing red - by PhilP - 10-Jan-2015, 12:23
RE: dB indicator flashing red - by Morten - 10-Jan-2015, 10:18
RE: dB indicator flashing red - by f1eng - 10-Jan-2015, 10:27
RE: dB indicator flashing red - by PhilP - 10-Jan-2015, 12:27
RE: dB indicator flashing red - by f1eng - 10-Jan-2015, 22:53
RE: dB indicator flashing red - by PhilP - 10-Jan-2015, 23:59
RE: dB indicator flashing red - by Confused - 10-Jan-2015, 12:57
RE: dB indicator flashing red - by PhilP - 10-Jan-2015, 15:10
RE: dB indicator flashing red - by Riddo - 13-Jan-2015, 00:28
RE: dB indicator flashing red - by f1eng - 13-Jan-2015, 13:10
RE: dB indicator flashing red - by thumb5 - 13-Jan-2015, 13:43
RE: dB indicator flashing red - by PhilP - 13-Jan-2015, 14:36
RE: dB indicator flashing red - by Tony - 10-Jan-2015, 18:21
RE: dB indicator flashing red - by f1eng - 11-Jan-2015, 14:05
RE: dB indicator flashing red - by PhilP - 12-Jan-2015, 10:59
RE: dB indicator flashing red - by f1eng - 12-Jan-2015, 15:08
RE: dB indicator flashing red - by PhilP - 12-Jan-2015, 16:28
RE: dB indicator flashing red - by f1eng - 12-Jan-2015, 17:29
RE: dB indicator flashing red - by PhilP - 13-Jan-2015, 15:11

Forum Jump:


Users browsing this thread: 1 Guest(s)