In this month's letters section, JA responds to a reader who points out that we'll never understand the technical/sound divide of an amplifier when tests only use steady-state signals. In his response, JA said the music signal can be de-constructed into sinewaves of diff. frequencies and amplitudes. And therefore derive a test-sound quality standard.Is this true ? Or tech-babble ? I would think we need better tests to understand the audio signal as it's processed by a (very complex) audio component...
Edits: 10/22/19
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Topic - JA on music waveform - J. Phelan 16:39:16 10/22/19 (99)
- It seems to me... - EdAInWestOC 13:38:39 02/27/20 (0)
- The only music waveform is from speakers. What is the audio signal anywhere else? nt - geoffkait 05:31:08 10/28/19 (7)
- I hear musical waveforms from acoustic instruments and human voices at least once a week. - Timbo in Oz 21:55:24 11/30/19 (0)
- Sooo, - Acoustic music concerts have NEVER happened, never Will happen? - Timbo in Oz 02:55:07 11/29/19 (0)
- Never been to a live acoustic music concert, then? - Timbo in Oz 02:40:16 11/29/19 (0)
- RE: The only music waveform is from speakers. What is the audio signal anywhere else? nt - ishmael39@earthlink.net 08:14:02 11/18/19 (2)
- RE: The only music waveform is from speakers. What is the audio signal anywhere else? nt - Inmate51 10:51:36 11/18/19 (1)
- RE: The only music waveform is from speakers. What is the audio signal anywhere else? nt - Krav Maga 21:13:36 11/19/19 (0)
- RE: The only music waveform is from speakers. What is the audio signal anywhere else? nt - J. Phelan 10:29:39 10/28/19 (0)
- Whatever happened to, "I like the way that sounds" . . . - Billy Wonka 16:27:12 10/26/19 (29)
- RE: Whatever happened to, "I like the way that sounds" . . . - hahax@verizon.net 17:26:32 10/29/19 (1)
- . . .Richard C. Heyser, required reading for all ... a humble man whom dwarfs every other audio man... - Cleantimestream 20:25:06 11/03/19 (0)
- RE: Whatever happened to, "I like the way that sounds" . . . - hahax@verizon.net 20:29:03 10/26/19 (26)
- RE: Whatever happened to, "I like the way that sounds" . . .+1 re Both Your Postings Here (nt) - goldenthal 12:22:53 11/01/19 (0)
- RE: Whatever happened to, "I like the way that sounds" . . . - J. Phelan 10:25:51 10/27/19 (24)
- Seeing Fourier as a failure is like complaining to Darwin that there are still idiots (nt) - 13th Duke of Wymbourne 10:48:14 10/28/19 (1)
- Hey, you're getting close to home . . . - Billy Wonka 14:28:25 10/28/19 (0)
- RE: Whatever happened to, "I like the way that sounds" . . . - John Atkinson 14:33:11 10/27/19 (21)
- RE: Whatever happened to, "I like the way that sounds" . . . - J. Phelan 15:22:56 10/27/19 (20)
- RE: Whatever happened to, "I like the way that sounds" . . . - John Atkinson 13:48:55 10/28/19 (19)
- RE: Whatever happened to, "I like the way that sounds" . . . - J. Phelan 16:33:08 10/28/19 (18)
- RE: Whatever happened to, "I like the way that sounds" . . . - CG 19:40:09 10/28/19 (17)
- RE: Whatever happened to, "I like the way that sounds" . . . - J. Phelan 09:53:14 10/29/19 (15)
- RE: Whatever happened to, "I like the way that sounds" . . . - CG 17:42:33 10/29/19 (14)
- RE: Whatever happened to, "I like the way that sounds" . . . - J. Phelan 08:40:46 10/30/19 (13)
- RE: Whatever happened to, "I like the way that sounds" . . . - CG 17:41:58 10/30/19 (10)
- RE: Whatever happened to, "I like the way that sounds" . . . - J. Phelan 17:57:31 10/30/19 (9)
- RE: Whatever happened to, "I like the way that sounds" . . . - CG 18:21:06 10/30/19 (8)
- RE: Whatever happened to, "I like the way that sounds" . . . - J. Phelan 18:57:32 10/30/19 (7)
- RE: Whatever happened to, "I like the way that sounds" . . . - CG 18:57:23 10/31/19 (6)
- RE: Whatever happened to, "I like the way that sounds" . . . - J. Phelan 19:37:32 10/31/19 (5)
- RE: Whatever happened to, "I like the way that sounds" . . . - CG 19:48:02 10/31/19 (4)
- RE: Whatever happened to, "I like the way that sounds" . . . - 13th Duke of Wymbourne 10:46:11 11/01/19 (1)
- RE: Whatever happened to, "I like the way that sounds" . . . - CG 10:53:45 11/01/19 (0)
- RE: Whatever happened to, "I like the way that sounds" . . . - J. Phelan 10:42:12 11/01/19 (1)
- RE: Whatever happened to, "I like the way that sounds" . . . - CG 10:51:47 11/01/19 (0)
- RE: Whatever happened to, "I like the way that sounds" . . . - John Atkinson 12:05:50 10/30/19 (1)
- RE: Whatever happened to, "I like the way that sounds" . . . - J. Phelan 15:32:19 10/30/19 (0)
- Thank You, good stuff)nT - Cleantimestream 06:12:17 10/29/19 (0)
- RE: JA on music waveform - CG 15:40:40 10/25/19 (2)
- RE: JA on music waveform - J. Phelan 15:56:49 10/25/19 (1)
- RE: JA on music waveform - CG 16:20:41 10/25/19 (0)
- Fourier notwithstanding -- I suspect a good case could be made for square waves... - mhardy6647 13:36:50 10/23/19 (3)
- Agree about square waves - E-Stat 07:46:39 10/24/19 (1)
- the switching amps do have peculiar properties (measurements) vis-a-vis Class A or AB (nt) - mhardy6647 08:09:43 10/24/19 (0)
- Stability tendencies too! (nt) - Steve O 21:25:55 10/23/19 (0)
- If you want to be precise about it, Fourier analysis applies to LTI systems only - Dave_K 11:52:39 10/23/19 (5)
- RE: If you want to be precise about it, Fourier analysis applies to LTI systems only - CG 13:20:35 10/23/19 (4)
- As amplifier age do they lose their memory? - 13th Duke of Wymbourne 16:37:36 10/23/19 (3)
- RE: As amplifier age do they lose their memory? - CG 06:40:51 10/25/19 (1)
- :) (nt) - 13th Duke of Wymbourne 15:09:39 10/25/19 (0)
- RE: As amplifier age do they lose their memory? - CG 17:46:01 10/23/19 (0)
- "Throw Out The..." - Doug Schneider 11:08:02 10/23/19 (13)
- RE: "Throw Out The..." - hahax@verizon.net 20:43:22 10/24/19 (0)
- RE: "Throw Out The..." - J. Phelan 16:38:29 10/23/19 (11)
- RE: "Throw Out The..." - Ivan303 20:35:51 10/23/19 (2)
- RE: "Throw Out The..." - J. Phelan 07:54:11 10/24/19 (1)
- RE: "Throw Out The..." - Doug Schneider 03:39:35 10/25/19 (0)
- RE: "Throw Out The..." - Doug Schneider 17:39:14 10/23/19 (4)
- RE: "Throw Out The..." - J. Phelan 18:03:11 10/23/19 (3)
- RE: "Throw Out The..." - Doug Schneider 18:44:02 10/23/19 (2)
- RE: "Throw Out The..." - J. Phelan 18:51:16 10/23/19 (1)
- RE: "Throw Out The..." - Doug Schneider 05:58:27 10/24/19 (0)
- RE: "Throw Out The..." - 13th Duke of Wymbourne 16:49:29 10/23/19 (2)
- RE: "Throw Out The..." - CG 16:23:23 10/25/19 (1)
- RE: "Throw Out The..." - J. Phelan 18:18:10 10/25/19 (0)
- "Better Tests" - Inmate51 08:06:37 10/23/19 (0)
- RE: JA on music waveform - CG 02:45:29 10/23/19 (23)
- Good posts (nt) - Dave_K 11:59:12 10/23/19 (1)
- RE: Good posts (nt) - CG 10:44:41 10/24/19 (0)
- RE: JA on music waveform - CG 03:50:49 10/23/19 (7)
- Thanks - E-Stat 08:37:26 10/23/19 (4)
- RE: Thanks - CG 09:48:01 10/23/19 (3)
- RE: Thanks - E-Stat 09:55:14 10/23/19 (2)
- RE: Thanks - CG 10:38:07 10/23/19 (1)
- Sure - E-Stat 10:47:57 10/23/19 (0)
- RE: JA on music waveform - J. Phelan 07:55:44 10/23/19 (1)
- RE: JA on music waveform - CG 08:28:10 10/23/19 (0)
- RE: JA on music waveform - CG 03:45:13 10/23/19 (11)
- RE: JA on music waveform - John Atkinson 10:02:28 10/24/19 (10)
- RE: JA on music waveform - CG 10:43:31 10/24/19 (1)
- RE: JA on music waveform - John Atkinson 13:08:44 10/24/19 (0)
- RE: JA on music waveform - J. Phelan 10:42:44 10/24/19 (7)
- Many pearls were cast before you in this whole thread - 13th Duke of Wymbourne 16:56:43 10/24/19 (5)
- RE: Many pearls were cast before you in this whole thread - J. Phelan 19:48:38 10/24/19 (4)
- Just to clarify - Dave_K 06:54:45 10/25/19 (1)
- RE: Just to clarify - J. Phelan 11:05:52 10/25/19 (0)
- RE: Many pearls were cast before you in this whole thread - John Atkinson 06:25:23 10/25/19 (0)
- RE: Many pearls were cast before you in this whole thread - CG 06:02:41 10/25/19 (0)
- RE: JA on music waveform - John Atkinson 13:07:05 10/24/19 (0)
- RE: JA on music waveform - CG 03:09:53 10/23/19 (0)
- Yes, it is called Fourier analysis. (NT) - Kal Rubinson 18:17:22 10/22/19 (0)
- Tech-babble is for manufacturers :) - 13th Duke of Wymbourne 18:03:04 10/22/19 (6)
- RE: Tech-babble is for manufacturers :) - J. Phelan 19:31:54 10/22/19 (5)
- RE: Tech-babble is for manufacturers :) - highendfan 12:53:15 10/23/19 (0)
- RE: Tech-babble is for manufacturers :) - 13th Duke of Wymbourne 20:38:37 10/22/19 (0)
- RE: Tech-babble is for manufacturers :) - Davey 20:05:55 10/22/19 (2)
- RE: Tech-babble is for manufacturers :) - J. Phelan 20:37:05 10/22/19 (1)
- RE: Tech-babble is for manufacturers :) - Davey 08:16:59 10/23/19 (0)