Amplitude 分析チャートご案内

2022 2/8

2021-11-6

Ultrasonic Analyzer [iPad]

Ultrasonic Analyzer is a real-time spectrum, spectrogram, oscilloscope and octave RTA analyzer for your iPhone or iPad. It can give you a visual representation Amplitude 分析チャートご案内 of many ultrasounds using a sampling rate up to 384kHz**. You have the opportunity Amplitude 分析チャートご案内 to listen to transposed ultrasounds* and analyze them in real-time. For sounds normally impossible to hear you can also use slowed-down playback.
Ultrasonic Analyzer can be used to Amplitude 分析チャートご案内 analyze the calls of different animals (bats, dolphins), measure the frequency response of hi-end audio equipment or ultrasonic sensors. You can also analyze any imported audio file into a spectrogram context.

- Sampling rates: 44.1kHz, 48kHz, 96kHz, 192kHz, 200kHz, 250kHz, 384kHz
- Listening to transposed ultrasounds during recording feature*
- Spectrogram analyzer (color, black and white) Amplitude 分析チャートご案内 Amplitude 分析チャートご案内
- Spectrum analyzer
- Oscilloscope (full FFT window size)
- Octave RTA analyzer: bands Amplitude 分析チャートご案内 - full, 1/3, 1/6, 1/12 (RMS values)
- Max/min Octave RTA values
- SPL Amplitude 分析チャートご案内 Meter (dBFS)
- Fast real-time response
- Variable frequency resolution of the spectrogram
- Variable between FFT computations time interval (available smaller than 1ms!)
- Fast Fourier Transform (Amplitude 分析チャートご案内 Amplitude 分析チャートご案内 FFT)
- Window sizes: 256, 512, 1024, 2048, 4096, 8192, 16384, 32768, 65536
- Amplitude 分析チャートご案内 Recording trigger (triggered by frequencies in the specified frequency band)
- Zoom and pan all charts
- Measure values in all charts
- Playback back analysis (just tap on the spectrogram and play)
- Transposition during playback
- Slow down playback – transpose Amplitude 分析チャートご案内 required octaves down
- PIP (picture-in-picture), allows the simultaneous analysis on the spectrogram chart and Second chart: Octave RTA, Spectrum or Oscilloscope
- Audio input can be supplied Amplitude 分析チャートご案内 Amplitude 分析チャートご案内 Amplitude 分析チャートご案内 via the built-in microphone and an external microphone (via the USB camera adapter or through the iPhone/iPad dock connector – Core Audio compliant devices)
- Sharing charts and Amplitude 分析チャートご案内 audio recordings (through mail, social networks, clipboard)
- Exporting to the iOS Document Browser (supports Amplitude 分析チャートご案内 iCloud): audio recordings (wav) and image charts (png)
- Importing audio files from another application or from the iOS Document Browser (supports iCloud)
- Many formats supported for Amplitude 分析チャートご案内 audio file import: wav, caf, aac, mp3
- Automatic conversion from other sampling rates Amplitude 分析チャートご案内 for imported files
- Frequency scale: linear and logarithmic
- Amplitude scale: linear and logarithmic SPL/RMS (dBFS)
- SPL meter weighting: dBZ - linear
- Variable spectrograms length (depends on set resolution)

Tested with (via the USB camera adapter):

- Dodotronic Ultramic200K, Ultramic250K, Ultramic384K
- Pettersson M500-384
- Avisoft-UltraSoundGate 116Un

Make sure you use the latest iOS update.

*Use an external microphone with ultrasonic capabilities through a USB camera adapter or through the iPhone/iPad dock connector.
**For real-time ultrasonic analysis use an external microphone with ultrasonic capabilities through a USB camera adapter or through the iPhone/iPad dock connector. You can Amplitude 分析チャートご案内 also import files recorded on an external device.

Spotify APIで楽曲の分析データを取得する方法

ガーオン

A confidence measure from 0.0 to 1.0 of whether the track is acoustic. 1.0 represents high confidence the track is acoustic.

Danceability describes how suitable a track is for dancing based on a combination of musical elements including tempo, rhythm stability, beat strength, and overall regularity. A value of 0.0 is least danceable and 1.0 is most Amplitude 分析チャートご案内 Amplitude 分析チャートご案内 danceable.

Energy is a measure from 0.0 to 1.0 and represents a perceptual measure of intensity and activity. Typically, energetic tracks feel fast, loud, and noisy. For example, death metal has high energy, while a Bach prelude scores low on the scale. Perceptual features contributing to this attribute include dynamic range, perceived loudness, timbre, Amplitude 分析チャートご案内 onset rate, and general entropy.

Predicts whether a track contains no vocals. “Ooh” and “Amplitude 分析チャートご案内 aah” sounds are treated as instrumental in this context. Rap or spoken word tracks are clearly “vocal”. The closer the instrumentalness value is to 1.0, the greater likelihood Amplitude 分析チャートご案内 the track contains no vocal content. Values above 0.5 are intended to represent instrumental tracks, but confidence is higher as the value approaches 1.0.

Detects the Amplitude 分析チャートご案内 Amplitude 分析チャートご案内 Amplitude 分析チャートご案内 presence of an audience in the recording. Higher liveness values represent an increased probability Amplitude 分析チャートご案内 that the track was performed live. A value above 0.8 provides strong likelihood that the track is live.

The overall loudness of a track in decibels (dB). Loudness Amplitude 分Amplitude 分析チャートご案内析チャートご案内 values are averaged across the entire track and are useful for comparing relative loudness of tracks. Loudness is the quality of a sound that is the primary psychological Amplitude 分析チャートご案内 correlate of physical strength (amplitude). Values typical range between -60 and 0 db.

Mode indicates the modality (major or minor) of a track, the type of scale from which its melodic content is derived. Major is represented by 1 and minor is 0.

Speechiness detects the presence of spoken words in a track. The more exclusively Amplitude 分析チャートご案内 speech-like the recording (e.g. talk show, audio book, poetry), the closer to 1.0 the attribute value. Values above 0.66 describe tracks that are probably made entirely of spoken words. Values between 0.33 and 0.66 describe tracks that may contain both music and speech, either in sections or layered, including such cases as Amplitude 分析チャートご案内 rap music. Values below 0.33 most likely represent music and other non-speech-like tracks.

The overall estimated tempo of a track in beats per minute (BPM). In musical terminology, tempo is the speed or pace of a given piece and derives directly from the average beat duration.

The key the track is in. Integers map to pitches using standard Pitch Class notation . E.g. 0 = C, 1 = C♯/D♭, 2 = D, and so on.

An estimated overall time signature of a track. The Amplitude 分析チャートご案内 time signature (meter) is a notational convention to specify how many beats are in each bar (or measure).

A measure from 0.0 to 1.0 describing the musical positiveness conveyed by a track. Tracks with high valence sound more positive (e.Amplitude 分析チャートご案内 g. happy, cheerful, euphoric), while tracks with low valence sound more negative (e.g. sad, depressed, angry).

The popularity of the artist. The value will be between 0 Amplitude 分析チャートご案内 and 100, with 100 being the most popular. The artist’s popularity is calculated from the popularity of all the artist’s tracks.

audio_analysis

audio_analysisは曲を時間軸で区切って分析したデータとなるようで、「'meta', 'track', 'bars', 'beats', 'sections', 'segments', 'tatums'」という軸でデータが取得できます。

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