Recent content by NTL2009

Any modification that you do to a sine wave will produce some added frequency content. Depending how you do it, it could be harmonic (whole number multiple of the sine wave), or in-harmonic (some fractional multiple). Also, your comment: is not really true. A drum hit does contain a lot of...

I couldn't really follow what was being described there. It's tough to comment w/o the actual waveform files, and how they were constructed, and descriptions of what was expected and unexpected upon listening to them.

I don't know. The 'individual clicks' looks like a single cycle of a sawtooth every ~ .7 seconds, but some look a little different. Not sure what you mean by 'after product'? Are you listening with headphones? If not, things in the room can resonate, creating an 'after tone'. I was doing some...

I couldn't get to the linked media, so I'm not sure what is being played. I just hear 11 'thumps'. If those are ~ 1 Hz sawtooth waves, then I'd expect to hear a noise burst ("thump") at one second intervals, as the steep slope will create a lot of high frequency energy. The gentle ramp would...

By 'carefully constructed', I just meant that the increasing time of 10 samples between each of the two pulses that make up each 'note'. When it comes to signals like this, I don't think 'pitch' is so well defined, it's a perception thing to hear a pitch in something that is maybe better...

I sort of hear a descending pitch, but these are rather 'pitch-less' noise bursts, so it's not clear to my not so well trained ear. I hear 5 equally spaced 'blips' and the 6th comes in half the time (like 4 pizzicato notes with quarter note rests between, followed by 2 pizzicato notes with an...

When you have time, can you spell out exactly what you want, and what you expect someone to hear? I took a shot at this in Audacity and will share the files here. File m2p is the wav output of 0.5 sec silent, a pulse of 3 samples (44.1K sample rate), then a 2nd pulse ~ 1 msec later. m3 is...

Take your time, we can catch up as time permits (the beauty of asynchronous communication, after all, this thread is many months old already!). I have not used numpy, so don't feel like digging into that at the moment. But I did use Audacity to create a few pulses - start with 0.5 Sec silence...

OK, looking at your OP - you are mixing terms in the same sentence, and it is confusing you. Yes, a single pulse theoretically has "all the frequencies". How the ear responds to this is, I'm sure, complicated - but skip that for a second. "I don't understand why sending this pulse repeatedly...

I don't follow you. My post was about the 10Hz and 10.1Hz sawtooth waves. What do you mean by "no frequency"? What has "no frequency" (a single pulse?)? What do you mean by "2 isolated pulses"? Non-repeating, but a delay between, or repeating? Please submit a graphical representation. Or an...

Old thread I know, but it came up under the recent saxophone/growl thread and caught my attention. I think you are starting with an assumption that may or may not be accurate, and that is warping your thinking. When I mixed a 10Hz and 10.1Hz sawtooth in Audacity, I hear a series of tone bursts...

I'm not trying to make any statement at all (in this thread) about what is 'good' or 'bad' (though I do agree with you in the musical realm). Maybe I'm misreading this whole thread, but I thought OP was just looking for the physics behind what produces a tone that is lower in frequency than...

I don't think he's saying harmonic content is the whole story to how we identify an instrument. The Hammond organ produces a static harmonic content (with the exception of the "Percussion" tab, which adds a quickly decaying tone). The harmonic content of an acoustic instrument varies over time...

I'm not sure where this "feeling righteous" comment comes from. I think I acknowledged that the musical approach of thinking in terms of overtones can be useful for certain discussions. But, as I understand it, the OP was looking for the physics behind what produced the lower frequencies. So I...

No - as pointed out, the first harmonic IS the fundamental. And 2f is the SECOND harmonic, but musicians call it the FIRST overtone. The physics way is clean - everything is a multiple. The music way is very, very messy for these conversations - if I play a square wave on my synthesizer, and...