Just in the past two days, whenever I try to apply Tremolo to a sound, I get a message saying “Nyquist returned a value of :”, followed by the frequency number I’ve tried to use for the Tremolo. The tremolo is NOT applied to the file. After repeated attempts, including restarting both Audacity and my computer (MacBook running 10.7.5), I searched for a solution. The only results I could find were how to intentionally apply a Nyquist value. Does anyone have a simple solution to help me get rid of this bug and back to where Audacity just works? Thanks to any who reply! 
Where is the Tremolo effect from? (can you post a link, or attach the .ny file to your reply)
Here’s the Tremolo that I’ve been using (successfully) for about six months. No problems until a few days ago. I can’t remember if it came with Audacity, or if it’s one of a bunch of Nyquist effects I added.
Dave
tremolo.ny (1.46 KB)
That looks OK, and it works here.
Do other Nyquist plug-ins work? (for example; High Pass Filter).
If you run the Tremolo effect clicking the “Debug” button instead of the “OK” button, a “debug” window will open. If there is any text in there, please copy and paste it into your reply.
I created a simple 440 sine wave, then tried to apply a Tremolo effect of 4. I clicked “Debug”, and got the same message: “Niquist returned a value of: 4.0000”. However, when I clicked “OK”, I got another message: “error: unbound function - GET-DURATION”. I have no idea what that means, or how to fix it. HELP!?!
Look in the Audacity “Help menu > About Audacity”.
What is the full version name/number of Audacity are you using?
I’m using Audacity 2.0.3 on a MacBook running OS 10.7.5.
Are you sure you don’t mean, when you click the “Debug” button?
Do other Nyquist plug-ins work? (for example; High Pass Filter).
Nope, Steve. When I clicked the “Debug” button, I got the value returned by Niquist. When I clicked the “OK” within that message, THEN I got the error message. Surprised me, too. Maybe it’s different in Windoze? 
I’ve gotten the same kind of Niquist message with a few other effects, but most seem to work. I’m not sure what inner glitch is happening. I suppose the next step is to completely uninstall Audacity and all its parts, then reinstall, but I sure wish there was another way.
OK, I think that makes sense.
You click the Debug button, and you first get a pop-up that says “Nyquist returned a value of : 4.0000”, then when you click the “OK” button you get a new pop-up (the “debug” window) with the message “error: unbound function - GET-DURATION”. Have I got that right?
It is still puzzling that you are getting that error. “GET-DURATION” is a function that is a standard part of Nyquist, so if that is “unbound” it means that part of Nyquist is missing (not installed).
I think that you will need to remove Audacity and re-install it. Ensure that you follow these installation instruction closely: Audacity ® | Download for Mac OS
Thanks, Steve, for confirming. I hate to have to do reinstalls – they always seem cumbersome and messy – but it may be the best fix. I appreciate the support (moral and otherwise!)
Well, a reinstall seems to have solved the Tremolo problem. I still have to load in the peripherals to allow me to save mp3’s, but Audacity is back to normal so far. Thanks for the assist!
Dave
You’re welcome.
Any idea how it went wrong in the first place?
Whatever it was, it wasn’t intentional… and it wasn’t the result of anything I’m aware of. I’ll keep an eye on what happens if/when I run any new programs which might have affected Audacity, but I suspect I’ll never catch the little green men.
Thanks for the help that was given to my previous Nyquist problem. Reinstalling seems to have fixed it. But now there’s a NEW one! I downloaded 2.0.4 the day it came out. I was excited about the “Buzz Tone” option under the “Generate” menu. However, every time I’ve tried it, I’ve gotten an error message saying “Nyquest did not return audio”. I don’t know what that means! I’ve tried several other “Generate” items, and even when all the defaults are left as they are, I still get the same message. Is there a way to reset or reinstall Nyquist? Thanks for any knowledgeable assistance!
Dave
Try running it again but press the “debug” button instead of the OK button.
After the plug-in has completed there will be another window open - this is the “debug window” that may contain information about what went wrong. Copy that information into your reply.
Thanks. What I got when I pressed Debug was “error: unbound function - MULT”. Does that help, doc? :-}
Dave
While we’re at at it, 2.0.4 won’t let me import audio into an existing track, which I WAS able to do in 2.0.3. (I couldn’t open a sound file, but I could create a new file in Audacity, put in empty tracks, then import a sound file.) The message below is what I got from the crash report when I tried to import a sound titled “MBuzz1min.wav” (no odd characters or spaces). I’m running OS 10.7.5 on a MacBook. I’d appreciate any feedback from knowledgeable diagnosticians, which I’m definitely not. Thanks!
Dave
\
Process: Audacity [43278]
Path: /Applications/Audacity 2.0.4 ƒ/Audacity 2.0.4.app/Contents/MacOS/Audacity
Identifier: net.sourceforge.audacity
Version: 2.0.4.0 (2.0.4.0)
Code Type: X86 (Native)
Parent Process: launchd [282]
Date/Time: 2013-09-09 17:26:54.664 -0700
OS Version: Mac OS X 10.7.5 (11G63)
Report Version: 9
Interval Since Last Report: 890405 sec
Crashes Since Last Report: 21
Per-App Interval Since Last Report: 15002 sec
Per-App Crashes Since Last Report: 10
Anonymous UUID: 367D236E-3E77-4854-8CC6-2708F0C40634
Crashed Thread: 0
Exception Type: EXC_BAD_ACCESS (SIGBUS)
Exception Codes: KERN_PROTECTION_FAILURE at 0x0000000001186ffe
VM Regions Near 0x1186ffe:
MALLOC metadata 000000000117b000-0000000001186000 [ 44K] rw-/rwx SM=PRV
--> MALLOC guard page 0000000001186000-0000000001187000 [ 4K] ---/rwx SM=NUL
VM_ALLOCATE 0000000001187000-000000000118c000 [ 20K] rw-/rwx SM=PRV
Thread 0 Crashed:
0 ??? 0x9cdf733b 0 + 2631889723
1 ??? 0x9a6c91fa 0 + 2590806522
2 ??? 0x9a6ef450 0 + 2590962768
3 ??? 0x9a6eb1f9 0 + 2590945785
4 ??? 0x9a6dde92 0 + 2590891666
5 ??? 0x9a6ddc97 0 + 2590891159
6 ??? 0x9a6ddc37 0 + 2590891063
7 ??? 0x9a6e4546 0 + 2590917958
8 ??? 0x9a6e4a6f 0 + 2590919279
9 ??? 0x9a6d2456 0 + 2590843990
10 ??? 0x9a6d47b0 0 + 2590853040
11 ??? 0x0043cdc5 0 + 4443589
12 ??? 0x0043ced3 0 + 4443859
13 ??? 0x0043cab8 0 + 4442808
14 ??? 0x004ea4b9 0 + 5153977
15 ??? 0x005567e6 0 + 5597158
16 ??? 0x004ecaa3 0 + 5163683
17 ??? 0x00037a7b 0 + 227963
18 ??? 0x00555fe1 0 + 5595105
19 ??? 0x0055605b 0 + 5595227
20 ??? 0x00125b7b 0 + 1203067
21 ??? 0x00199aa5 0 + 1677989
22 ??? 0x001511b2 0 + 1380786
23 ??? 0x0023e1f0 0 + 2351600
24 ??? 0x0018d3eb 0 + 1627115
25 ??? 0x0059b0e3 0 + 5877987
26 ??? 0x0059b25f 0 + 5878367
27 ??? 0x0059b62f 0 + 5879343
28 ??? 0x004bbaaf 0 + 4962991
29 ??? 0x004201a8 0 + 4325800
30 ??? 0x004514ef 0 + 4527343
31 ??? 0x9a621c0c 0 + 2590120972
32 ??? 0x9a49d313 0 + 2588529427
33 ??? 0x9a49c790 0 + 2588526480
34 ??? 0x9a4b1571 0 + 2588611953
35 ??? 0x9a6220d0 0 + 2590122192
36 ??? 0x9a62213a 0 + 2590122298
37 ??? 0x9a68d98d 0 + 2590562701
38 ??? 0x9a4edd79 0 + 2588859769
39 ??? 0x9a67e88c 0 + 2590501004
40 ??? 0x9a67e987 0 + 2590501255
41 ??? 0x004481d0 0 + 4489680
42 ??? 0x003e64ba 0 + 4089018
43 ??? 0x9a621c0c 0 + 2590120972
44 ??? 0x9a49d313 0 + 2588529427
45 ??? 0x9a49c790 0 + 2588526480
46 ??? 0x9a4b1571 0 + 2588611953
47 ??? 0x9a4b1d27 0 + 2588613927
48 ??? 0x9a49d7ce 0 + 2588530638
49 ??? 0x9a49c790 0 + 2588526480
50 ??? 0x9a4b1571 0 + 2588611953
51 ??? 0x003e4056 0 + 4079702
52 ??? 0x003e412f 0 + 4079919
53 ??? 0x003fca53 0 + 4180563
54 ??? 0x0048f68f 0 + 4781711
55 ??? 0x004698d3 0 + 4626643
56 ??? 0x0054a34a 0 + 5546826
57 ??? 0x0003f24b 0 + 258635
58 ??? 0x0003efae 0 + 257966
59 ??? 0x0003eed5 0 + 257749
Thread 1:
0 ??? 0x9be4c90a 0 + 2615462154
1 ??? 0x9a91f853 0 + 2593257555
Thread 2:
0 ??? 0x9be49d36 0 + 2615450934
1 ??? 0x9cdcc439 0 + 2631713849
2 ??? 0x00050234 0 + 328244
3 ??? 0x9ce1eed9 0 + 2632052441
4 ??? 0x9ce226de 0 + 2632066782
Thread 3:: com.apple.CFSocket.private
0 ??? 0x9be4bb42 0 + 2615458626
1 ??? 0x9ce1eed9 0 + 2632052441
2 ??? 0x9ce226de 0 + 2632066782
Thread 4:
0 ??? 0x9be4c02e 0 + 2615459886
1 ??? 0x9ce226fe 0 + 2632066814
Thread 5:
0 ??? 0x9be4c02e 0 + 2615459886
1 ??? 0x9ce226fe 0 + 2632066814
Thread 6:: com.apple.appkit-heartbeat
0 ??? 0x9be4bbb2 0 + 2615458738
1 ??? 0x9cdd3558 0 + 2631742808
2 ??? 0x991246da 0 + 2568111834
3 ??? 0x9b019e25 0 + 2600574501
4 ??? 0x9b019dd5 0 + 2600574421
5 ??? 0x9ce1eed9 0 + 2632052441
6 ??? 0x9ce226de 0 + 2632066782
Thread 7:
Thread 0 crashed with X86 Thread State (32-bit):
eax: 0x00000000 ebx: 0x016285c0 ecx: 0x00000036 edx: 0xffb202c0
edi: 0x01e4a3e0 esi: 0x01666d66 ebp: 0xbfffdc88 esp: 0xbfffdc7c
ss: 0x00000023 efl: 0x00010286 eip: 0x9cdf733b cs: 0x0000001b
ds: 0x00000023 es: 0x00000023 fs: 0x00000000 gs: 0x0000000f
cr2: 0x01186ffe
Logical CPU: 0
Binary Images:
0x8fe4f000 - 0x8fe81aa7 dyld (195.6 - ???) <60FD3471-A1D7-342E-99A7-3EDECDAEC6EC> /usr/lib/dyld
External Modification Summary:
Calls made by other processes targeting this process:
task_for_pid: 34
thread_create: 0
thread_set_state: 0
Calls made by this process:
task_for_pid: 0
thread_create: 0
thread_set_state: 0
Calls made by all processes on this machine:
task_for_pid: 15182900
thread_create: 0
thread_set_state: 0
VM Region Summary:
ReadOnly portion of Libraries: Total=280K resident=280K(100%) swapped_out_or_unallocated=0K(0%)
Writable regions: Total=143.5M written=19.9M(14%) resident=65.9M(46%) swapped_out=3812K(3%) unallocated=77.7M(54%)
REGION TYPE VIRTUAL
=========== =======
(null) (reserved) 208K reserved VM address space (unallocated)
ATS (font support) 32.9M
CG backing stores 13.3M
CG image 124K
CG raster data 236K
CG shared images 3448K
CoreGraphics 8K
CoreServices 2692K
MALLOC 59.1M
MALLOC guard page 64K
Memory tag=240 4K
Memory tag=242 12K
Memory tag=249 156K
OpenCL 28K
Stack 66.6M
Stack (reserved) 516K reserved VM address space (unallocated)
VM_ALLOCATE 22.5M
__DATA 172K
__LINKEDIT 76K
__TEXT 204K
mapped file 334.6M
shared memory 19.1M
shared pmap 16.4M
=========== =======
TOTAL 572.3M
TOTAL, minus reserved VM space 571.6M
Model: MacBook7,1, BootROM MB71.0039.B0E, 2 processors, Intel Core 2 Duo, 2.4 GHz, 2 GB, SMC 1.60f6
Graphics: NVIDIA GeForce 320M, NVIDIA GeForce 320M, PCI, 256 MB
Memory Module: BANK 0/DIMM0, 1 GB, DDR3, 1067 MHz, 0x80AD, 0x484D54313132533654465238432D47372020
Memory Module: BANK 1/DIMM0, 1 GB, DDR3, 1067 MHz, 0x80AD, 0x484D54313132533654465238432D47372020
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x93), Broadcom BCM43xx 1.0 (5.106.198.19.22)
Bluetooth: Version 4.0.8f17, 2 service, 18 devices, 1 incoming serial ports
Network Service: Wi-Fi, AirPort, en1
Serial ATA Device: Hitachi HTS545025B9SA02, 250.06 GB
Serial ATA Device: HL-DT-ST DVDRW GS23N
USB Device: HL-2270DW series, 0x04f9 (Brother International Corporation), 0x0042, 0x26400000 / 2
USB Device: iPad, apple_vendor_id, 0x129f, 0x24100000 / 3
USB Device: Built-in iSight, apple_vendor_id, 0x8507, 0x24600000 / 2
USB Device: BRCM2070 Hub, 0x0a5c (Broadcom Corp.), 0x4500, 0x06600000 / 3
USB Device: Bluetooth USB Host Controller, apple_vendor_id, 0x8218, 0x06630000 / 4
USB Device: Apple Internal Keyboard / Trackpad, apple_vendor_id, 0x0236, 0x06300000 / 2
This is similar to your original problem. “MULT” is a standard Nyquist function. If MULT is unbound then there’s something badly wrong with your Audacity installation because part of it is missing/not found.
This should not keep happening. Does your computer have other problems? How regularly does your computer crash? Can you check that the hard drive is OK? Can you check the computer RAM?
Sorry I can’t help with the crash report, I don’t use Macs.
Please see this thread: Audacity 2.0.4 still crashes
This is a known issue and we’re working on it.
– Bill