Timeline for How do computers store sound waves just by sampling the amplitude of a wave and not the frequency?
Current License: CC BY-SA 4.0
32 events
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| Nov 16 at 21:26 | review | Close votes | |||
| Nov 17 at 0:06 | |||||
| Nov 16 at 21:18 | comment | added | marshal craft | A frequency does make, valid audio, it's just there isn't alot of information in it compared to sounds we hear. The computer very simply, ACTUALLY DOES just store a digital, approximate, simple model of the actual sound wave and not some other maybe more sophisticated sum of the frequencies. Explaining some things, with a fourier series is not as easy as just storing the amplitudes. | |
| Nov 16 at 21:13 | comment | added | marshal craft | sorry the way audio works.... | |
| Nov 16 at 21:10 | comment | added | marshal craft | it IS the "loudness" which determines some things. You can specify a sound of course by it's frequency, but it would just be a never ending "note". You could even include a sin series, but it would not be very interesting and basically would just be another "note". Even audio compression, the best mechanisms, still store data as amplitudes at the assigned sample rate. They compress it, by assigning special codes to statistically common number patterns. And it has nothing to do with frequencies. | |
| Nov 16 at 21:09 | comment | added | marshal craft | This question isn't really clear what you are asking except the title. Which is already probably been answered by existing questions. They dont require the frequency because they log a sample which is the amplitude at a routine period called the sample rate. | |
| Nov 3, 2023 at 14:59 | comment | added | RedP | @wizzwizz4 To be honest, I like reading their specification and the mark schemes way more than the book itself. I learn wayyyy more efficiently. But what can I do, it's the book that is given by my school lol. | |
| Oct 30, 2023 at 1:16 | answer | added | pennyloafers | timeline score: 0 | |
| Oct 29, 2023 at 23:16 | comment | added | wizzwizz4 | @RedP That textbook has many other errors (e.g. the Fully-qualified domain name page is totally wrong and they attribute map-reduce to Google): you could probably get 10k across the network by picking any given page, asking questions about the nonsense on it, and repeating. Aside from the OO programming examples (they have a rather idiosyncratic understanding of what OO is), AQA will give you the marks for writing correct answers, so it won't harm you to learn correct things. | |
| Oct 29, 2023 at 23:04 | comment | added | RedP | @wizzwizz4 yes it is lol :).It's the PG Online AQA A-AS Level book. The AQA spec is very ambiguous, it states that students must be able to: Describe the principles of operation of: an analogue to digital converter (ADC) and a digital to analogue converter (DAC). | |
| Oct 29, 2023 at 8:34 | comment | added | Rodrigo de Azevedo | dsp.stackexchange.com | |
| Oct 29, 2023 at 5:35 | answer | added | Dewi Morgan | timeline score: 0 | |
| Oct 28, 2023 at 21:51 | answer | added | Pierre Polovodov | timeline score: 0 | |
| Oct 27, 2023 at 17:14 | comment | added | wizzwizz4 | Is this the A-Level Computer Science textbook by Heathcote and Heathcote? | |
| Oct 27, 2023 at 7:30 | answer | added | César VB | timeline score: 4 | |
| Oct 26, 2023 at 20:46 | comment | added | rob♦ | A number of comments removed. To answer the question, please post an answer. | |
| Oct 26, 2023 at 5:40 | answer | added | Peter Cordes | timeline score: 1 | |
| Oct 25, 2023 at 21:23 | answer | added | lvnsn | timeline score: 4 | |
| S Oct 25, 2023 at 16:54 | history | suggested | A.L | CC BY-SA 4.0 |
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| Oct 25, 2023 at 16:33 | answer | added | CramerTV | timeline score: 2 | |
| Oct 25, 2023 at 15:42 | review | Suggested edits | |||
| S Oct 25, 2023 at 16:54 | |||||
| Oct 25, 2023 at 7:43 | answer | added | user121330 | timeline score: 5 | |
| Oct 25, 2023 at 7:06 | history | rollback | RedP |
Rollback to Revision 2
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| Oct 25, 2023 at 7:03 | history | edited | RedP |
[Edit removed during grace period]; edited tags
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| Oct 25, 2023 at 1:13 | answer | added | Joel Keene | timeline score: 30 | |
| Oct 24, 2023 at 22:01 | history | became hot network question | |||
| Oct 24, 2023 at 20:27 | review | Close votes | |||
| Nov 1, 2023 at 3:06 | |||||
| Oct 24, 2023 at 16:55 | history | edited | Qmechanic♦ |
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| Oct 24, 2023 at 16:34 | answer | added | niels nielsen | timeline score: 43 | |
| Oct 24, 2023 at 15:01 | answer | added | Solomon Slow | timeline score: 56 | |
| Oct 24, 2023 at 14:51 | review | Triage | |||
| Oct 24, 2023 at 20:15 | |||||
| S Oct 24, 2023 at 13:58 | review | First questions | |||
| Oct 24, 2023 at 14:05 | |||||
| S Oct 24, 2023 at 13:58 | history | asked | RedP | CC BY-SA 4.0 |