Analysis of information sources in references of the Wikipedia article "Bamboo flute" in English language version.
រន្ធ មាន បង្ហើរ ខ្យល់ ចោល មួយ ឬ ពីរ ស្ថិត នៅ លើ ក្រោម ឬ ចំហៀង តួ សម្រាប់ ជួយ តម្រូវ សំនៀង របស់ រន្ធ ចំ រន្ធ ទី ៧ ឬ រន្ធ ទី ៨ ។(translation: One or two vents on the bottom or side of the body to help adjust the tone of the seventh hole or eighth hole)
system of insufflation...placing a cane of conduit towards the mouth...to blow through the artificial "mouth"...due to the great distance from the normal mouth to the holes.
The Erh Ya (c. 400 B.C.) says the ch'ih was made of bamboo, its length was 16 inches, one hole opened upwards, and it was blown transversely.
...a flute originally from South America, from the Andean zone (Bolivia, Ecuador, Peru, Chile and Argentina...
The following article is from The Great Soviet Encyclopedia (1979)...An Uzbek and Tadzhik transverse flute...Depending on the material from which it is made the nai is called agach-nai (wooden), garau-nai (bamboo), misnai (tin), and brindgzhi-nai (brass)
The Erh Ya (c. 400 B.C.) says the ch'ih was made of bamboo, its length was 16 inches, one hole opened upwards, and it was blown transversely.
The following article is from The Great Soviet Encyclopedia (1979)...An Uzbek and Tadzhik transverse flute...Depending on the material from which it is made the nai is called agach-nai (wooden), garau-nai (bamboo), misnai (tin), and brindgzhi-nai (brass)
រន្ធ មាន បង្ហើរ ខ្យល់ ចោល មួយ ឬ ពីរ ស្ថិត នៅ លើ ក្រោម ឬ ចំហៀង តួ សម្រាប់ ជួយ តម្រូវ សំនៀង របស់ រន្ធ ចំ រន្ធ ទី ៧ ឬ រន្ធ ទី ៨ ។(translation: One or two vents on the bottom or side of the body to help adjust the tone of the seventh hole or eighth hole)
system of insufflation...placing a cane of conduit towards the mouth...to blow through the artificial "mouth"...due to the great distance from the normal mouth to the holes.
...a flute originally from South America, from the Andean zone (Bolivia, Ecuador, Peru, Chile and Argentina...