Sample rates do not match

Hi.
I am trying to generate a sweep waveform with 48KHz sampling frequency. However, I see that the lower frequencies have a 48KHz sampling frequencies but the higher frequencies have a bad sampling frequencies.
Can someone tell me how to generate tones with the same sampling frequencies?
It is the same issue with higher frequencies even if the waveform is single frequency (example 9khz waveform cannot be generated at 48khz freq). I am using a trial version Adobe Audition CC Build 732 (64 bit)

Generate Tones uses an entirely internal timing system, and effectively isn't influenced by any clocks at all. But even if you assumed that an internal clock drifted, it wouldn't account for anything like these apparent discrepancies. As an example, consider a 48k clock with a 2% error - which is way worse than you'd ever find these days. If you counted the number of samples over a millisecond, that would, unless you were extremely unlucky, still give you 48, because a 2% error is only 0.96 of a sample over that period.
But, if you opened up this recording in Audition as 48k, it would display it just the same as internally generated tone - so you'd get 48 samples anyway. What would be wrong when you played back the file (using an accurate sample reference for the playback) would be the pitch of your recording, and if it was a good drift, you could even end up with wow and flutter!
The answer to the question about recording external sources though is that it depends... If you have a S/PDIF input, it will use the clock from that (or you get a huge glitch when the sample rates drift to a one sample error). Same thing happens with a USB mic - the sync has to be established from the A-D clock source in the mic, and with a cheap example, that could be even worse than a computer-generated clock. So, it's only non-digital devices connected to the on-board sound device that are subjected to the vagiaries of the internal clock.
And yes, it's because I've considered this in some depth that I'm just a little sceptical about what's happening with the OP, if you see what I mean...

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How do you set sequence audio sample rate?

I tried posting this to another, but it was already answered, and noone will see it.
I am getting the capture error "audio sample rate doesn't match" and yes, I can see in my browser that the clip is 48khz/16bit, but the sequence is 48khz/32 bit. Howver, wherever I look to change the sequence setting, it is 48/16 already. I've gone to FCP on the menu dropdown to audio/video settings - it's correct all through there. I've gone to the menu dropdown Sequence settings, and it's correct there. I've closed down, opened a new sequence, restarted, everything I can think of. Is there a secret to getting them to match? And, can I fix a project already edited with this discrepancy? Its export to QT is WAY out of synch.

Annoying - I can't see your post when I am in reply mode.
Yes, I get this error when i am capturing. From reading a previous post about the error, I thought the solution was to check the audio rate of the captured clip in the browser, and then make sure it matched the audio rate of the sequence. Like I said, everywhere you get to change the sequence setting, it SAYS it is 48/16, but yet, whe I scroll over in the browser, it says the audio rate is 48 KHz and the audio format is 32-bit floating point. Am I looking at the right places?
I can't check the settings in the camera until this evening...don't ask.
I'm not so sure this is not a QT issue instead of anything to do with capturing, etc. It plays back fine in the timeline.

Sample rates do not match

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