Electromagnetic field pickup for musical instruments
OwnerRobert Francis Joseph Loftusinventor
Life of this patent
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Abstract
An electromagnetic field pickup (10) for a musical instrument including an electromagnetic signal generator (12), an electromagnetic field transducer (18), a mixer (28), the electromagnetic signal generator (12), the electromagnetic field transducer (18) and the mixer (28) are respectively connected in series, the electromagnetic signal generator (12) is also connected directly to the mixer (28), so constructed and arranged that when power is supplied to the electromagnetic field pickup (10) an audio electrical signal of substantially same pitch, intonation and sustain as a vibrating element (22) of the instrument is generated.
Claims3
A pickup for a musical instrument comprising:
- a signal generator;
- a transducer;
- a mixer;
- so constructed and arranged that when power is supplied to the pickup a first signal and a second signal are respectively sent from the signal generator to the transducer and the mixer;
- a first field derived from the first signal is transmitted from the transducer towards a vibrating element of the musical instrument;
- a second field derived by re-radiation and Doppler shifted modulation of the first field is received from the vibrating element by the transducer;
- a third signal derived from the second field is sent from the transducer to the mixer;
- the third signal and the second signal are mixed by the mixer-to produce a fourth signal;
- and
- the fourth signal includes a difference signal being a musical frequency audio electrical signal of substantially same pitch, intonation and sustain as a sound vibration from the vibrating element of the musical instrument.
A pickup for a musical instrument comprising:
- signal generator means, being means for generating a signal;
- transducer means, being means for converting between a signal and a field;
- mixer means, being means for mixing signals;
- so constructed and arranged that when power is supplied to the pickup a first signal and a second signal are respectively sent from the signal generator means to the transducer means and the mixer means;
- a first field derived from the first signal is transmitted from the transducer means towards a vibrating element of the musical instrument;
- a second field derived by re-radiation and Doppler shifted modulation of the first field is received from the vibrating element by the transducer means;
- a third signal derived from the second field is sent from the transducer means to the mixer means;
- the third signal and the second signal are mixed by the mixer means to produce a fourth signal;
- the fourth signal includes a difference signal being a musical frequency audio electrical signal of substantially the same pitch, intonation and sustain as a sound vibration from the vibrating element of the musical instrument.
A pickup for a musical instrument comprising:
- an ultrasonic signal generator;
- a transducer;
- a mixer;
- so constructed and arranged that when power is supplied to the pickup a first signal and a second signal are respectively sent from the ultrasonic signal generator to the transducer and the mixer;
- a first field derived from the first signal is transmitted from the transducer towards a vibrating element of the musical instrument;
- a second field derived by re-radiation and Doppler shifted modulation of the first field is received from the vibrating element by the transducer;
- a third signal derived from the second field is sent from the transducer to the mixer;
- the third signal and the second signal are mixed by the mixer to produce a fourth signal;
- and
- the fourth signal includes a difference signal being a musical frequency audio electrical signal of substantially same pitch, intonation and sustain as a sound vibration from the vibrating element of the musical instrument.
Dependencies are inferred from the claim text.