Ahi
DESCRIPTION:
Friture is a real-time audio analyzer. The purpose of Friture is to help analyze an audio signal to understand the characteristics of this signal (fundamental, harmonics, feedback, etc.), to describe the source/room/receiver behaviour (reverberation, gain peaks, etc.), or to make adjustments in the preprocessing (room equalization). This is achieved by providing a set of widgets to visualize audio data:
- 2D Spectrogram widget: Hōʻike ka 2D spectrogram widget i ka ʻikepili leo e pili ana i ka alapine a me ka manawa, ma ke ʻano holoʻokoʻa. Hoʻopaʻa ʻia ka hoʻonā manawa-frequency o ka hōʻike e ka lōʻihi o ka puka aniani o ka hoʻololi ʻana o Fourier (e like me ka manawa pane haʻahaʻa o ka widget spectrum). Ua kaupalena ʻia e ka hoʻonā o kāu hōʻike ma nā pika.
- Nā hāmeʻa Spectrum: Hōʻike ka hāmeʻa spectrum i ka ʻikepili leo me ka pinepine. He kūpono loa kēia e nānā i nā hiʻohiʻona o ka hōʻailona: ke alapine kumu, nā harmonics, nā alapine pane, etc. Hiki ke hoʻonohonoho ʻia ka manawa pane o ka hōʻike. Hoʻopili ʻia ka manawa pane liʻiliʻi i ka lōʻihi o ka puka makani o ka hoʻololi ʻana o Fourier. No kahi FFT o 1024 mau helu, a hāʻawi ʻia i ka helu hoʻohālike o 48000 Hz i hoʻohana ʻia e Friture, ʻo ka manawa pane haʻahaʻa he 1024/48000 = 21.3 ms. Hoʻohui, huki ka widget i nā piko no kēlā me kēia ʻāpana alapine. Hoʻomaopopo kēia mau piko i ka maxima hou loa o ka spectrum, a hoʻomaka e emi koke ma hope o ka hiki ʻana o ka piko. ʻO ka hope, ʻike ʻia kahi lepili i ke alapine o ka palena honua o ka spectrum.
- ʻO Octave Spectrum widget: Hōʻike ka octave spectrum widget i ka ʻikepili leo me ka manawa, e like me ka widget Spectrum. Hoʻopili ʻia ka ʻikepili leo i loko o nā pahu alapine me nā laula hapa-o-octave. ʻO kēlā me kēia pahu alapine ka hopena o kahi kānana hakina-o-octave.
- ʻO ka widget Scope: Hōʻike ka widget scope i ka ʻikepili leo me ka manawa. Hiki ke hoʻonohonoho ʻia ka pālākiō manawa. Hoʻonohonoho ʻia ka hōʻike e pili ana i kahi kihi alakaʻi o ka hōʻailona i hoʻonoho ʻia i waenakonu o ke axis manawa, e like me ka hana kuʻuna.
- Papa kiʻekiʻe: Hōʻike ka hāmeʻa pae i ka mana kiʻekiʻe (25 ms pane manawa, ʻo ia hoʻi, koke) a me ka mana RMS (300 ms pane manawa) ma dBFS (dB Full Scale). Ke hoʻohana ʻia ka mode 2-channels, hōʻike ia i nā pae o kēlā me kēia kahawai ma kahi ʻokoʻa.
