Timeline for Why do different value capacitors and resistors sound different in same amplifier circuit?
Current License: CC BY-SA 4.0
30 events
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| Jul 16, 2018 at 4:46 | history | edited | user188171 | CC BY-SA 4.0 |
deleted 161 characters in body
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| May 11, 2018 at 2:22 | comment | added | user188171 | @glen_geek TY for the comment... I have quite sharp ears, but lately have buzz too... It must be taking a toll... | |
| May 11, 2018 at 1:47 | comment | added | user188171 | @glen_geek I din't know of the colour of sound concept... I read color of noise - and - timbre on wikipedia... thanks for putting these new ideas into me... | |
| May 10, 2018 at 20:16 | answer | added | bmr | timeline score: 0 | |
| May 10, 2018 at 17:21 | answer | added | analogsystemsrf | timeline score: 1 | |
| May 10, 2018 at 16:25 | history | tweeted | twitter.com/StackElectronix/status/994614531342168065 | ||
| May 10, 2018 at 16:15 | comment | added | glen_geek | Seems like you have a critical ear that many passionate musicians develop. You'll come to realize that grey-matter processing is subjective and very hard to analyze. Loudspeakers color sound immensely too. Comparing what-you-hear with waveform analysis does provide a path toward improving your golden-ear perception. Been there, done that - primarily for investigating loudspeakers and their quirks. The audio chain is long - pickups, amps, speakers, ears & brain - which colors sound the most? | |
| May 10, 2018 at 15:39 | answer | added | Audioguru | timeline score: 4 | |
| May 10, 2018 at 15:22 | history | edited | user188171 | CC BY-SA 4.0 |
full url
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| May 10, 2018 at 14:29 | answer | added | JRE | timeline score: 11 | |
| May 10, 2018 at 14:23 | history | edited | user188171 | CC BY-SA 4.0 |
added example in "circuit"
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| May 10, 2018 at 14:21 | comment | added | user188171 | I got that, thank you... One answer below has the cutoff formula... | |
| May 10, 2018 at 14:10 | comment | added | Hearth | Your capacitor and resistor (and to a lesser extent your speaker) are making an RC (RLC including the speaker) filter. The cutoff frequency of the filter is dependent on the total resistance of the circuit and the capacitance of your capacitor. | |
| May 10, 2018 at 14:03 | answer | added | Dan Mills | timeline score: 3 | |
| May 10, 2018 at 14:00 | history | edited | JRE | CC BY-SA 4.0 |
inserted circuit
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| May 10, 2018 at 13:59 | comment | added | user188171 | @JRE As i posted above, this is the image circuit link.. I changed the capacitor only in this setup... alturl.com/5ozcm ... The resistors we changed in the electric guitar to amplfier setup... | |
| May 10, 2018 at 13:57 | comment | added | JRE | The effect depends greatly on the amplifier, and exactly where you are changing a resistor or capacitor. Do you have a diagram of the amplifier you were messing with? If so, post it and indicate which parts you changed. | |
| May 10, 2018 at 13:53 | answer | added | Jose | timeline score: 1 | |
| May 10, 2018 at 13:53 | comment | added | user188171 | @Felthry I do not have measurement tools other than a multimeter and arduino... I haven't gone through the waveform analysis, i should... The effect is quite pronounced so can say it has specific harmonics... I don't know what type, but in general, with respect to the image like i shared above from alturl... | |
| May 10, 2018 at 13:52 | comment | added | Colin | In that position it is part of a filter, the cutoff frequency changes with capacitance. | |
| May 10, 2018 at 13:49 | comment | added | Hearth | Do you get a measurable difference in the amplifier output? How big of a difference? Does it affect specific harmonics? Does it add a new resonance where there wasn't one otherwise? And where are the capacitors located, anyway? Is this a power supply bypass capacitor, or an integrator feedback capacitor, or what? | |
| May 10, 2018 at 13:47 | comment | added | user188171 | @Colin__s This is an image for LM386... It is between the IC and speaker here... alturl.com/5ozcm | |
| May 10, 2018 at 13:45 | comment | added | user188171 | I saw that, same value resistors sound different on different electric guitars... So 330K won't sound same one guitar than another one... | |
| May 10, 2018 at 13:45 | comment | added | Colin | Where is this capacitor located? A filter? Power supply? Just resting on top? | |
| May 10, 2018 at 13:44 | comment | added | user188171 | The recording from the guitar with different resistors is here... vibhutewary.com/data/share | |
| May 10, 2018 at 13:42 | comment | added | user188171 | Thank you... I added my next question in this as it seemed connected... I understand what ACC said... @Felthry, i have measured it, but the recording isn't as effective as listening to it first hand... | |
| May 10, 2018 at 13:39 | history | edited | user188171 | CC BY-SA 4.0 |
added my second question as it was related to first question, rather than in another question
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| May 10, 2018 at 13:35 | comment | added | a concerned citizen | If all caps were the same, they would have only allowed, or rejected, more frequencies, there would have been the same sound for two same valued caps. In practise, there is also a matter of electrolytes, methods of manufacture, age, parasitics, that add up to make, sometimes, even same capacitors "sound" different. | |
| May 10, 2018 at 13:35 | comment | added | Hearth | Have you measured this effect, or is it purely from experience? Remember, the human brain is very good at finding patterns where there are none. | |
| May 10, 2018 at 13:32 | history | asked | user188171 | CC BY-SA 4.0 |