In some cases, to play the bass through PA amplification, it is plugged into a direct box or DI, which routes the signal to the bass amp while also sending the signal directly into a mixing console, and thence to the main and monitor speakers. When a recording of bass is being made, engineers may use a microphone set up in front of the amplifier's speaker cabinet for the amplified signal, a direct box signal that feeds the recording console, or a mix of both.
Prior to the invention of tension rods, drum skins were attached and tuned by rope systems—as on the Djembe—or pegs and ropes such as on Ewe Drums. These methods are rarely used today, though sometimes appear on regimental marching band snare drums. The head of a talking drum, for example, can be temporarily tightened by squeezing the ropes that connect the top and bottom heads. Similarly, the tabla is tuned by hammering a disc held in place around the drum by ropes stretching from the top to bottom head. Orchestral timpani can be quickly tuned to precise pitches by using a foot pedal.
Casio definitely thought about the student/teacher relationship when designing the PX-160. It has a duet play mode, which splits the keyboard into two halves. Each half is the same octave range (about three and a half octaves per side), so a teacher can demonstrate on one side while the student plays on the other at the same pitch. Two headphone jacks allow both players to use headphones without the need for a splitter. If the speakers are being used, they can also be configured to output sound from the left keyboard side to the left speaker and vice versa.
Drummers often bring a carpet, mats or rugs to venues to prevent the bass drum and hi-hat stand from "crawling" (moving away) on a slippery surface from the drum head striking the bass drum. The carpet also reduces short reverberation (which is generally but not always an advantage), and helps to prevent damage to the flooring or floor coverings. In shows where multiple drummers will bring their kits onstage over the night, it is common for drummers to mark the location of their stands and pedals with tape, to allow for quicker positioning of a kits in a drummer's accustomed position. Bass drums and hi-hat stands commonly have retractable spikes to help them to grip surfaces such as carpet, or stay stationary (on hard surfaces) with rubber feet.
There are many varieties of picks available, but due to the thicker, heavier strings of the electric bass, bassists tend to use heavier picks than those used for electric guitar, typically ranging from 1.14 mm–3.00 mm (3.00 is unusual). Different materials are used for picks, including plastic, nylon, rubber, and felt, all of which produce different tones. Felt and rubber picks sound closer to a fingerstyle tone.
Several factors determine the sound a drum produces, including the type, shape and construction of the drum shell, the type of drum heads it has, and the tension of these drumheads. Different drum sounds have different uses in music. Take, for example, the modern Tom-tom drum. A jazz drummer may want drums that are high pitched, resonant and quiet whereas a rock drummer may prefer drums that are loud, dry and low-pitched. Since these drummers want different sounds, their drums are constructed and tuned differently.
The crash cymbals are usually the strongest accent markers within the kit, marking crescendos and climaxes, vocal entries, and major changes of mood/swells and effects. A crash cymbal is often accompanied by a strong kick on the bass drum pedal, both for musical effect and to support the stroke. It provides a fuller sound and is a commonly taught technique.
Drums are usually played by striking with the hand, or with one or two sticks. A wide variety of sticks are used, including wooden sticks and sticks with soft beaters of felt on the end. In jazz, some In many traditional cultures, drums have a symbolic function and are used in religious ceremonies. Drums are often used in music therapy, especially hand drums, because of their tactile nature and easy use by a wide variety of people.
In the 1930s, musician and inventor Paul Tutmarc of Seattle, Washington, developed the first electric string bass in its modern form, a fretted instrument designed to be played horizontally. The 1935 sales catalog for Tutmarc's electronic musical instrument company, Audiovox, featured his "Model 736 Bass Fiddle", a four-stringed, solid-bodied, fretted electric bass instrument with a 30 1⁄2-inch (775-millimetre) scale length. The adoption of a guitar's body shape made the instrument easier to hold and transport than any of the existing stringed bass instruments. The addition of frets enabled bassists to play in tune more easily than on fretless acoustic or electric upright basses. Around 100 of these instruments were made during this period.