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  2. Piano key frequencies - Wikipedia

    en.wikipedia.org/wiki/Piano_key_frequencies

    This is a list of the fundamental frequencies in hertz (cycles per second) of the keys of a modern 88-key standard or 108-key extended piano in twelve-tone equal temperament, with the 49th key, the fifth A (called A 4), tuned to 440 Hz (referred to as A440). [1] [2] Every octave is made of twelve steps called semitones.

  3. Scientific pitch - Wikipedia

    en.wikipedia.org/wiki/Scientific_pitch

    Scientific pitch, also known as philosophical pitch, Sauveur pitch or Verdi tuning, is an absolute concert pitch standard which is based on middle C (C 4) being set to 256 Hz rather than ~ 261.63 Hz, [a] making it ~ 31.77 cents lower than the common A440 pitch standard.

  4. Audio therapy - Wikipedia

    en.wikipedia.org/wiki/Audio_Therapy

    Audio therapy is the clinical use of recorded sound, music, or spoken words, or a combination thereof, recorded on a physical medium such as a compact disc (CD), or a digital file, including those formatted as MP3, which patients or participants play on a suitable device, and to which they listen with intent to experience a subsequent beneficial physiological, psychological, or social effect.

  5. Harmonic series (music) - Wikipedia

    en.wikipedia.org/wiki/Harmonic_series_(music)

    This objective structure is augmented by psychoacoustic phenomena. For example, a perfect fifth, say 200 and 300 Hz (cycles per second), causes a listener to perceive a combination tone of 100 Hz (the difference between 300 Hz and 200 Hz); that is, an octave below the lower (actual sounding) note. This 100 Hz first-order combination tone then ...

  6. Surat Shabd Yoga - Wikipedia

    en.wikipedia.org/wiki/Surat_Shabd_Yoga

    First is simran, or the repetition of Lord's holy names. It brings back our scattered attention to the tisra til - the third eye (behind our eyes), which is the headquarters of our mind and soul, in the waking state, whence it has scattered. Second is dhyan, or contemplation on the immortal form of the Master.

  7. Audio frequency - Wikipedia

    en.wikipedia.org/wiki/Audio_frequency

    The SI unit of frequency is the hertz (Hz). It is the property of sound that most determines pitch. [1] The generally accepted standard hearing range for humans is 20 to 20,000 Hz. [2] [3] [4] In air at atmospheric pressure, these represent sound waves with wavelengths of 17 metres (56 ft) to 1.7 centimetres (0.67 in).

  8. Chakra - Wikipedia

    en.wikipedia.org/wiki/Chakra

    Lexically, chakra is the Indic reflex of an ancestral Indo-European form *kʷékʷlos, whence also "wheel" and "cycle" (Ancient Greek: κύκλος, romanized: kýklos). [10] [3] [4] It has both literal [11] and metaphorical uses, as in the "wheel of time" or "wheel of dharma", such as in Rigveda hymn verse 1.164.11, [12] [13] pervasive in the earliest Vedic texts.

  9. Svadhishthana - Wikipedia

    en.wikipedia.org/wiki/Svadhishthana

    The Sacral Chakra is where awareness evolves into pure human consciousness. It is the subconscious mind’s seat, storing all of our life events and impressions from the beginning of our existence in the womb. Our karmas are stored in the Root Chakra, but they are triggered in the Sacral Chakra.