Kick : the drum create sound by the kick of foot Snare : a ubiquitous percussion instrument known for its cylindrical shape and powerful, staccato sound Closed hat : Open hat : Task 2: c
Trang 1Nhóm 7:
Nguyễn Bá Duy Dương Văn Hùng
Đỗ Văn Sang Trần Minh Đức Nguyễn Khắc Ngân
Vũ Văn Chinh
Task 1:
1 the drum machine has been recorded digitally The drum machine has been pre-recorded from the oiginal instruments
2 Kick : the drum create sound by the kick of foot
Snare : a ubiquitous percussion instrument known for its cylindrical shape and powerful, staccato sound
Closed hat :
Open hat :
Task 2:
c when the drum is hit, it produces sound waves
e the sound waves reach the microphone and are converted into an electrical signal
b the signal is sliced into many ‘samples’ each one a snapshot of the strength
of the signal at one particular moment This information is converted into binary code and then stored in the machine’s memory
a when the drum pad is pressed, the stored information is decode and
produces an electronic signal
Trang 2d the signal is turned into sound waves through an amplifier, and the drum sound is heard
Task 3:
1 – e
2 – a
3 – b
4 – c
5 – d
6 – f
Task 4:
1 You can create your own songs and rhythrms without ever touching a drum kit
2 The machine's read-only memory stores sounds which have been pre-recorded from the original instruments
3 Instead of recording the sound waves continuously, a drum machine is programmed with sounds that have been sampled from the electrical
signals produced by the microphne
4 The signal is sliced into many ‘samples’ each one a snapshot of the
strength of the signal at one particular moment
5 The advantage of digital sound is that it has only two electrical conditions:
on and off
6 Sound recorded in this way remain accurate
7 How hard you press and for how long tells the microprocessor how loud and at which tempo the sound
Trang 38 The machine can also quantize, or shift the sounds being played, so that each is rhythmically perfect If you hit a note a little ahead or behind the beat, the machine will automatically place the drum hit rifht on the beat Task 5:
1 With a drum machine, you can play any drum sound by pressing the right
button
2 You can create drum music withuot playing a drum.
3 What we hear as sound are changing in air pressure.
4 These are converted to electrical signal by using a microphone.
5 The information contained in the drum machine memory consists of
sampling of these electrical signals
6 A drum machine contains recording of sound taken at measured intervals.
7 This process is called sampling
8 The funcions of a drum machine include panning and tunning
9 Panning means the positioning of the drum sound in stereo.
Task 6
1 A burglar alarm = an alarm which warns of burglar
2 A clock timer = the clock which make an appointment
3 A mercury switch = a switch which contains mercury
4 A car phone = a phone for use in car
5 A germanium diode = a diode which contains germanium
6 A ground wave = this travels along the groud, following the curvature of the earth’s surface
7 A block diagram = A diagram which the principal parts or functions are represented by blocks connected by lines that show the relationships of the blocks
8 A assembly line = a series of workers and machines in a factory
9 A fuseholder = a fuse in a holder
Trang 410 A wavemeter = an instrument for measuring frequency
11.Headphones = a pair of small loudspeakers that are designed to be held in place close to a user's ears
12 A cellphones= mobilephones
13.An ammeter = an instrument for measuring current
14.A handset = On an old-fashioned wired telephone
Task 7
1 analogue waves
2 a digital signal have two voltage levels, 0 and 1
3 An analog-to-digital converter (ADC) is a device that can be changed
analogue signals into digital signals
4 The samples of the original signals must be taken at successive interval of time the magnitudes of the samples are changed into digital values by the ADC
5 Each binary digit used to show a binary value is know as a bit Th accuracy
of conversion is limited by the number of binary bits esed by the ADC