(
Internal sound pitch is low with continuous low sequences. It's not the
same when compares with External sound. To most it sounds the same.
Many still can't differentiate between Internal sound and External
sound)
I had received numerous calls regarding the effectiveness of Swiftlets sound for farm
The
questions were…..What are considered good sound? How do we find good
sound? How do we know the sound we bought is a good sound? What are the
criteria of good sound? …. As usual the lists can go on. .
I
hesitated and tried not to discuss too much about it, otherwise it
would make those who had purchased many Cd sounds confuse and in dilemma
whether what they had bought is worth to buy or which Cd amongst the
whole bunch they have is really good.
These
were the common questions asked by my readers and sometimes it takes me
hours to explain to them. Since there so many of them interested to
know and wanting to distinguish between good and poor
Swiftlet sound, lets revisit what I had written in my previous articles
on sound and further explain thoroughly.. Before that let’s have some
clear picture of what is sound.
For humans, hearing (sound) is normally limited to frequencies between about 12 Hzand 20,000 Hz (20kHz), although these limits are not definite. The upper limit generally decreases with age. Other species
have a different range of hearing. For example, animal like dogs can
perceive vibrations higher than 20 kHz. As a signal perceived by one of
the major sense is relative sensitive.
Sound is used by many species for detecting danger, navigation, predation, and communication. Many species, such as birds, marines and terrestrial mammals, have also developed special organs to produce sound. This is vital for survival.
Sound
frequency is measured in Herz (Hz) or a thousand of Hz which is Khz.
The frequency range of Swiftlet echolocation calls is between 1-16 kHz
(fullard et al.,1993). These frequencies fall in the range of human
hearing which is about 12-20,000Hz.
That
is why we are able to hear the Swiftlet clicking sound in farms.
Besides the clicking sound for navigation other sounds that are in high
and low pitch are use to communicate and to socialize.
The
low and high pitch chirping sound from Swiftlet represents certain
socialize behavior, thus if you’re experience enough you would be able
to distinguish these sounds. Thru my observation there are sound
produced by Swiftlet for certain communication purposes. e.g.: the stress sound is produced to inform others about danger, female in heat creates sound during mating season, etc.
Besides
that sounds are use for communicate and socialize during mating
seasons. If a played sound consists of tones and pitches that associated
with heating sound then during the mating season it would attract lots
of birds to approach the source of sound thus entering the farm.
So
knowing how to identify and distinguish good and poor sound is very
important if you want birds to stay and make nests in your farm.
What
is good sound? This frequently asked by my readers. A good sound should
consist of high and low pitch (in term of frequency) specially set
during recording of sound. It is just like tuning the timing of a car
engine prior to racing. If the tuning is not done correctly or simply
being tuned then the car performance would be jeopardized.
Don’t be mistaken by the “common sound”
which is duplicated from one CD to another. It is being copied or
burned. This is done without adjusting its frequencies and its pitches.
Furthermore certain parts of unattractive sounds in common sound
are not removed prior to editing and duplication and commonly copied and
burned and sold to others or passes from one farm’s owner to another.
This is what I call “common sound”. I do not believe in using “common sound”. Every farm should have its identity and this make the farm unique. Using a “popular common sound”
the chances are your neighbors might be using it too, perhaps in a roll
of shop there are few farms using it. Therefore the uniqueness is gone.
Immaterial how expensive the “common sound” is or how some claimed it to be good as long at an area there are more than few farms using the same sound then the uniqueness is gone.So the definition of common sound: A sound uses by many farms.
With many farms using the same sound the conditions of Sound Hypnotism
will no longer works. It sounds foreign isn’t it? Have you all ever
heard about sound hypnotism? I guess not. Those who are experience in
Swiftlet sound knew what I meant. In fact sound hypnotism is not new, it
has been there since sound system being employed into farm. It is a
matter of how in-depth your knowledge in Swiftlet sound is otherwise
sound hypnotism is totally foreign to you even though you may have
collections of thousand of swiftlet Cd sound.
This is where the farm identity conditions and uniqueness (hypnotism)
come in. Did you ever wonder why certain farms that have so many nests
and birds perhaps ten of thousands yet when one build a farm next to
this existing farm he is unable to attract birds from this old
successful farms? Because the old farm has or indirectly conditioned the birds with it farm identity and uniqueness (hypnotism).
Did you ever wonder why those old Sifus always say “never give or exchange your Switlet Cd sound with others”? Because once too many farms are using it then the sound would lose it uniqueness. I strongly believe in that.
A
good sound should be carefully mixed with attractive sound of Swiftlet
chirping. A combination of many different tunes of low and high pitch
that can attract young birds as well as old birds to come into the farm
to stay and to make nests.
In
order to do this one must understand the interpretation of low and high
pitch of the swiftlet chirping and it sequences. Every pitch low or
high and it sequences represent certain communications. It’s more
complex than we thought. This is beyond sound clarity and sharpness
which is the basic of Swiftlet sound recording. Even if the sound of the
Cd is very clear and sharp but if it doesn’t have the attractive
pitches in it then sound hypnotism will not work.
When
I do my sound recording and remix I make sure all the attractive sounds
are put into a Cd and setting the right pitch for every chirping. All
the Cd sounds that I remixed for my readers are the only copy none of
them shared the same copy. All are labeled and recorded specially for
every each farm. The purpose is to create uniqueness.
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