Even where there is no room for this, specially designed fences, such as one in east London made of woven willow shoots and evergreen plants, shield residents near the highway from unwanted noise.
तार छेड़ने के बजाय, हैमर एक इलॆक्ट्रॉनिक सर्किट को सक्रिय करता है जो वादक के इयरफ़ोन में स्वर उत्पन्‍न करता है ।