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Abstrak :
Teknologi akustik sangat bermanfaat terutama dibidang perkebunan yaitu untuk mendeteksi kematangan buah seperti misalnya buah melon, karena buah ini sangat digemari oleh masyarakat. Pengukuran tingkat kematangan buah melon ini menggunakan sensor suara yang dikendalikan oleh mikrokontroller dengan tampilan LCD dan program Labview 2011. Pengukuran ini dilakukan dengan mengukur besar diameter buah melon, nilai amplitude dan kecepatan rambat gelombang suara yang melewati daging buah melon. Pendeteksian ini menghasilkan tingkat amplitude dan kecepatan perambatan suara yang berbeda beda tergantung dari tingkat kematangan buah melon. Buah melon termasuk kategori matang apabila besarnya persentase amplitudo yang ditransmisikan 22% sampai 61 %, setengah matang 63% sampai 75% dan mentah 65.2 % sampai 89%. dan besarnya kecepatan gelombang suara pada buah melon lebih kecil dibandingkan dengan buah melon setengah matang ataupun mentah yaitu 556m/s sampai 1111m/s, melon setangah matang 1000m/s sampai 1020 m/s dan melon mentah 1209 m/s sampai 7500 m/s. ...... Acoustic technology is very useful especially in plantation is to detect the ripeness of the fruit, such as melon, because the fruit is very popular. The measurement of the melon fruit maturity level have been done using the sound sensor which is controlled by a microcontroller with LCD display and Labview program 2011. This measurement is done by measuring at the large diameter of the melons, the value of the amplitude and velocity of sound waves passing through the melon flesh. This show that the propagation speed of the acoustic sound different depending on the level of maturity level of the melon. The melon is categorized ripe if the magnitude of the amplitude of the transmitted wave is approximately 22% - 61 %, 63% - 75% for half cooked melon, and 65.2 % - 89%. is for raw melon. The magnitude of the sound speed in ripe melon is 556m/s - 1111m/s, while in half ripe melon is 1000m/s - 1020 m/s d and for raw melon is 1209 m/s - 7500 m/s.

Abstrak :
This extensively reworked 2nd edition of the book includes ten new chapters. It also features an updated discussion of simulation software tools, covering topics such as simulating complex and/or expensive amplifier structures with the free LTspice software by developing a broad range of additional simulation models, especially those for triodes and transformers. The book adopts the structure used in The Sound of Silence books, with the first part, Basics-Calculations and Simulations, providing deep simulation-triggered insights into the gain and noise mechanisms of differential amplifiers, BJTs, resistors, and triodes. The second part then discusses the RIAA Phono-Amp Engine II, describing all the necessary design, simulation, calculation, construction and measurement processes for this multi-functional MC amplifier. The third part, Knowledge Transfer, presents new ideas on draft designs of the linear low-noise MC input stages (also an extremely low-noise one) and a range of practical measurement tools. Additionally, it includes a chapter on MM amplifiers and their noise production, and offers some surprising solutions. The brand new and extensive chapter on all the simulation models developed and used in the book rounds-out the voyage through the jungle of compromises, allowing best-in-class balanced MC phono-amplifiers to be produced. Lastly, the book also features an extensive index, and free downloads of all Mathcad worksheets are available on Springer's Extra Materials website (extra.springer.com).

Abstrak :
Skripsi ini membahas tentang kualitas akustik ruang yang terjadi pada Masjid Al-Safar. Penulisan ini bertujuan untuk mengetahui pemenuhan parameter akustik pada bangunan Masjid Al-Safar sebagai masjid dengan tipologi bangunan modern dan bentuk bangunan yang unik. Penulisan dilakukan dengan mendefinisikan elemen akustik yang terdapat pada masjid Al-Safar kemudian mengukur parameter akustik ruang di dalamnya berupa distribusi bunyi dalam ruang, tingkat bising latar belakang (noise), tingkat kekerasan bunyi (signal), SNR, RT, dan SI. Perhitungan dilakukan dengan pengukuran data di lapangan dan pengukuran akustik menggunakan software I-Simpa. Temuan pada skripsi ini menunjukkan bahwa distribusi bunyi dalam bentuk ruang masjid Al-Safar berjalan dengan baik namun terabaikannya aspek materialitas bangunan dalam meningkatkan akustik sehingga nilai waktu dengung menjadi panjang dan kejelasan suara ucap menjadi kurang jelas. Penulis menyarankan perbaikan akustik dengan menitikberatkan pada perbaikan jenis material dinding dan lantai dengan penambahan material akustik. ......This study discuss about room acoustic quality of Al-Safar Mosque. This study aims to understand the performance of Al-Safar Mosque as a modern typology building and a building with unique shape based on acoustic parameters. This study is done by defining acoustical elements that exists in AL-Safar Mosque then measuring the acoustic parameters consists of sound distributions, level of noises, Sound pressure level of Signal Sound, SNR, RT, and SI. The parameter values is achieved by calculating data on site and calculating acoustic data using digital computation in I- Simpa acoustic software. This study shows that the sound distributions in the room happens well but materiality of the buildings that affected the quality of sound inside the room is ignored. This implied to a long Reverberation Time value and bad Speech Intelligibility. Writer propose an acoustic refinement by adding the material of wall and floor with acoustic reinforcement materials.