Meters.lv2
meters.lv2 - a collection of audio level meters with GUI in LV2 plugin format.
The bundle includes needle style meters (mono and stereo variants) as well as related audio measurement tools. The needle meters comply with IEC 60268-10/17 specifications, the K-meters are RMS type as conform with Bob Katz' practices. IEC 61260 standard filters are used for the 1/3 octave spectrum display and the EBU Recommendation 128 applied to the ebur128 meter.
A few notes on the user interface:
- Click + drag on the calibration-screw allows to modify the reference level of the needle meters.
- Shift + click on the calibration-screw resets to default.
- Ctrl + click anywhere on the canvas of a needle meter resets its window to 100% size.
- Clicking anywhere on the bar-graph meters resets the peak-hold.
- To facilitate chaining, all plugins pass the audio though unmodified (they merely tap-off the signal; host providing this is zero-copy). The plugins can be dropped into the effect-processor box of any DAW supporting LV2.
Further reading:
- IEC standards linked from text above (non free)
- Wikipedia: VU_meter, Peak_programme_meter.
- How To Make Better Recordings in the 21st Century - An Integrated Approach to Metering, Monitoring, and Leveling Practices by Bob Katz.
- "Audio Metering: Measurements, Standards and Practice: Measurements, Standards and Practics", by Eddy Brixen. ISBN: 0240814673
- "Art of Digital Audio", by John Watkinson. ISBN: 0240515870
| Class | Name | Audio/Midi/CTRL | Description | URI | ||
|---|---|---|---|---|---|---|
| in | out | |||||
| Analyser | BBC M-6 | 2/0/1 | 2/0/2 | BBC M-6, Mid/Side stereo audio level meter according to IEC 60268-10 / Type IIa. L/R -6dB. | http://gareus.org/oss/lv2/meters#BBCM6 | |
| Analyser | BBC Meter (Mono) | 1/0/1 | 1/0/1 | Mono audio level meter according to IEC 60268-10 / Type IIa (BBC scale). | http://gareus.org/oss/lv2/meters#BBCmono | |
| Analyser | BBC Meter (Stereo) | 2/0/1 | 2/0/2 | Stereo audio level meter according to IEC 60268-10 / Type IIa (BBC scale). | http://gareus.org/oss/lv2/meters#BBCstereo | |
| Analyser | Stereo Phase-Correlation Meter | 2/0/1 | 2/0/1 | Stereo phase correlation meter. | http://gareus.org/oss/lv2/meters#COR | |
| Analyser | DIN Meter (Mono) | 1/0/1 | 1/0/1 | Mono audio level meter according to IEC 60268-10 Type I with DIN scale. | http://gareus.org/oss/lv2/meters#DINmono | |
| Analyser | DIN Meter (Stereo) | 2/0/1 | 2/0/2 | Stereo audio level meter according to IEC 60268-10 Type I with DIN scale. | http://gareus.org/oss/lv2/meters#DINstereo | |
| Analyser | EBU Meter (Mono) | 1/0/1 | 1/0/1 | Mono audio level meter according to IEC 60268-10 / Type IIb (EBU scale). | http://gareus.org/oss/lv2/meters#EBUmono | |
| Analyser | EBU R128 Meter | 2/0/1 | 2/0/1 | Stereo audio level meter according to EBU Recommendation 128. | http://gareus.org/oss/lv2/meters#EBUr128 | |
| Analyser | EBU Meter (Stereo) | 2/0/1 | 2/0/2 | Stereo audio level meter according to IEC 60268-10 / Type IIb (EBU scale). | http://gareus.org/oss/lv2/meters#EBUstereo | |
| Analyser | K12/RMS Meter (Mono) | 1/0/1 | 1/0/3 | Mono audio level meter according to the K-system. K-12/RMS variant (Broadcast) | http://gareus.org/oss/lv2/meters#K12mono | |
| Analyser | K12/RMS Meter (Stereo) | 2/0/1 | 2/0/5 | Stereo audio level meter according to the K-system. K-12/RMS variant (Broadcast) | http://gareus.org/oss/lv2/meters#K12stereo | |
| Analyser | K14/RMS Meter (Mono) | 1/0/1 | 1/0/3 | Mono audio level meter according to the K-system. K-14/RMS variant (Home Theatre, pop-music) | http://gareus.org/oss/lv2/meters#K14mono | |
| Analyser | K14/RMS Meter (Stereo) | 2/0/1 | 2/0/5 | Stereo audio level meter according to the K-system. K-14/RMS variant (Home Theatre, pop-music) | http://gareus.org/oss/lv2/meters#K14stereo | |
| Analyser | K20/RMS Meter (Mono) | 1/0/1 | 1/0/3 | Mono audio level meter according to the K-system. K-20/RMS variant (Large Theatre, wide-range-music) | http://gareus.org/oss/lv2/meters#K20mono | |
| Analyser | K20/RMS Meter (Stereo) | 2/0/1 | 2/0/5 | Stereo audio level meter according to the K-system. K-20/RMS variant (Large Theatre, wide-range-music) | http://gareus.org/oss/lv2/meters#K20stereo | |
| Analyser | Nordic Meter (Mono) | 1/0/1 | 1/0/1 | Mono audio level meter according to IEC 60268-10 Type I with Nordic scale. | http://gareus.org/oss/lv2/meters#NORmono | |
| Analyser | Nordic Meter (Stereo) | 2/0/1 | 2/0/2 | Stereo audio level meter according to IEC 60268-10 Type I with Nordic scale. | http://gareus.org/oss/lv2/meters#NORstereo | |
| Analyser | Signal Distribution Histogram | 1/0/1 | 1/0/1 | Mono audio signal distribution histrogram display. Useful to plot noise-shapes. | http://gareus.org/oss/lv2/meters#SigDistHist | |
| Analyser | True-Peak and RMS Meter (Mono) | 1/0/3 | 1/0/5 | A combined True Peak (4x oversampling) and RMS meter display with additional numeric digital peak. Intended for mastering. | http://gareus.org/oss/lv2/meters#TPnRMSmono | |
| Analyser | True-Peak and RMS Meter (Stereo) | 2/0/3 | 2/0/10 | A combined True Peak (4x oversampling) and RMS meter display with additional numeric digital peak. Intended for mastering. | http://gareus.org/oss/lv2/meters#TPnRMSstereo | |
| Analyser | VU Meter (Mono) | 1/0/1 | 1/0/1 | Mono audio level meter according to IEC 60268-17 standard (VU meter). | http://gareus.org/oss/lv2/meters#VUmono | |
| Analyser | VU Meter (Stereo) | 2/0/1 | 2/0/2 | Stereo audio level meter according to IEC 60268-17 standard (VU meter). | http://gareus.org/oss/lv2/meters#VUstereo | |
| Analyser | Bit Meter | 1/0/1 | 1/0/1 | Floating Point Bit Debug Tool. | http://gareus.org/oss/lv2/meters#bitmeter | |
| Analyser | True-Peak Meter (Mono) | 1/0/1 | 1/0/2 | Mono audio Level true-peak meter. Digital peak meter with 4 times oversampling, 13.3dB/s falloff. | http://gareus.org/oss/lv2/meters#dBTPmono | |
| Analyser | True-Peak Meter (Stereo) | 2/0/1 | 2/0/4 | Stereo audio Level true-peak meter. Digital peak meter with 4 times oversampling, 13.3dB/s falloff. | http://gareus.org/oss/lv2/meters#dBTPstereo | |
| Analyser | DR14 - Dynamic Range Meter (Mono) | 1/0/3 | 1/0/6 | Pleasurize Music Foundation Dynamic Range Meter | http://gareus.org/oss/lv2/meters#dr14mono | |
| Analyser | DR14 - Dynamic Range Meter (Stereo) | 2/0/3 | 2/0/12 | Pleasurize Music Foundation Dynamic Range Meter | http://gareus.org/oss/lv2/meters#dr14stereo | |
| Analyser | Stereo Phase Scope | 2/0/1 | 2/0/2 | Stereo phase scope (goniometer). | http://gareus.org/oss/lv2/meters#goniometer | |
| Analyser | Phase/Frequency Wheel | 2/0/7 | 2/0/2 | Phase/Frequency Wheel - display stereo-signal phase (angle) relative to frequency (radius). | http://gareus.org/oss/lv2/meters#phasewheel | |
| Analyser | 1/3 Octave Spectrum Display Mono | 1/0/4 | 1/0/60 | a 30-band (1/3 octave) spectrum analyzer, Implemented using 6th order butterworth biquad filters complying with performance requirements of class-0 IEC 61260. The frequency range is in powers-of-two centered around 1000Hz (see iec-61260 annex a). Reference level is 0dBFS, the time-conatant defaults to 1 second. | http://gareus.org/oss/lv2/meters#spectr30mono | |
| Analyser | 1/3 Octave Spectrum Display Stereo | 2/0/4 | 2/0/60 | a 30-band (1/3 octave) spectrum analyzer, Implemented using 6th order butterworth biquad filters complying with performance requirements of class-0 IEC 61260. The frequency range is in powers-of-two centered around 1000Hz (see iec-61260 annex a). Reference level is 0dBFS, the time-conatant defaults to 1 second. | http://gareus.org/oss/lv2/meters#spectr30stereo | |
| Analyser | Stereo/Frequency Scope | 2/0/4 | 2/0/1 | Stereo Scope display channel difference per frequency. | http://gareus.org/oss/lv2/meters#stereoscope | |