A steep shape like the French horn provides gentler attacks, but changes the timbre of the instrument. A flatter shape improves the precision of attack. A shallow cup produces a brighter tone and the upper notes are easier to play. A deep cup gives a darker tone and low notes are easier to play.
![super low trumpet pedal tones super low trumpet pedal tones](https://www.reverbland.com/raw_images/how-to-play-high-notes-on-trumpet.jpg)
This trumpet mouthpiece is very solidly constructed. You may click on the bold text for further details. This increasesthe effective length for high frequencies loweringthe high resonant frequencies. The mouthpiece acts like a cavity resonator, and asthe played frequency approaches this resonant frequency, the effectivelength of the tube becomes greater (approaching the tube length which would give that same resonantfrequency. The mouthpiece of a brass instument contributes to bringing the resonances into a harmonic sequence by bringing the high resonances down with respect to the resonances of a closed tube. Producing a harmonic sequence with a brass instrument The bell makes the brass instruments very efficient acoustically. The bell makes a more efficient match to the outside air it is driving than a straight pipe. You may click on the highlighted text for further details. Another result of theaddition of the bell is the production ofthe pedal tone, a unique characteristic ofbrass instruments. When the overall length is adjusted, the high resonances can beleft unchanged. The lowest resonance is shifted up the most. The upper harmonics are not exactly in tune with equal temperament, and the seventh harmonic is particularly troublesome.īesides being a very effective sound radiator, thebell of a brass instrumentaffects its acoustics by raising the lower resonancesfrom those of a closed tubetoward a more useful harmonicsequence. Producing an exact harmonic sequence of notes has its problems, as may be seen from the values of harmonics in cents. The result is close to a harmonic sequence, but the lowest resonance is discarded and an extra pedal tone can be played as the fundamental of the sequence.
![super low trumpet pedal tones super low trumpet pedal tones](http://themoderntrumpet.com/wp-content/uploads/2020/07/Range_Chart-1024x1003.png)
The mouthpiece forces the upper resonances down (the mouthpiece effect) and the bell forces the lower resonances up (the bell effect). This is accomplished by forcing the resonant frequencies toward the harmonic frequencies with the acoustic effects of the bell and mouthpiece.
Super low trumpet pedal tones full#
Brass Instrument Acoustics Producing a harmonic sequence of notes with a trumpetĪ closed tube produces only odd harmonics, but it is desirable for a brass instrument to produce all harmonics - a full harmonic sequence.